{
  "schemaVersion": 1,
  "currency": "MAJOR_COINS",
  "reportDate": "2026-09-20",
  "generatedAt": "2026-09-20T16:31:45+00:00",
  "currentSnapshotAt": "2026-09-20T16:30:00+00:00",
  "previousSnapshotAt": "2026-09-19T16:30:00+00:00",
  "headline": "Major-coin options diverge as Solana volatility pulls further above Bitcoin",
  "standfirst": "Major-coin one-week ATM IV dispersion widened 2.30 volatility points to 21.40 points at the cutoff, with Solana one-week ATM IV at 55.38% and Bitcoin one-week ATM IV at 33.98%. Solana also posted the largest one-week ATM IV change, rising 2.00 points, while Bitcoin and Ether one-week ATM IV each edged lower. The widening relative-volatility gap ranked at the 81.8 percentile of the available history.",
  "marketSummary": "Solana’s 55.38% one-week ATM IV stood 21.40 volatility points above Bitcoin’s 33.98%, widening the major-coin level spread by 2.30 points. Solana’s 2.00-point one-week ATM IV increase contrasted with small declines for Bitcoin and Ether.",
  "constituents": [
    {
      "asset": "BTC",
      "reportDate": "2026-09-20",
      "artifactId": "sha256:92cfd34cd0d111a4e6700ada41789eba96486fec3bb47d0cd65ef7741998b9d9",
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      "asset": "ETH",
      "reportDate": "2026-09-20",
      "artifactId": "sha256:85d25e8829a31eb69a58d864fe7c044c5030f55b8885a1363d3f6601e88f46cd",
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    },
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      "asset": "SOL",
      "reportDate": "2026-09-20",
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        "generatedAt": "2026-09-20T16:30:44+00:00",
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        "previousSnapshotAt": "2026-09-19T16:30:00+00:00",
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            "timestamp": "2026-09-19T16:30:00+00:00"
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        },
        "windowHours": 24.0,
        "currency": "BTC",
        "methodology": {
          "source": "Derivasys proprietary historical SVI surface and canonical BTC index databases",
          "comparison": "Nearest successful surface snapshots approximately 24 hours apart",
          "rrConvention": "25-delta call IV minus 25-delta put IV",
          "bfConvention": "Average 25-delta wing IV minus ATM forward IV",
          "greeks": "Black forward Greeks for a normalized one-BTC ATM-forward call, zero rate, fitted SVI IV",
          "commentary": "Metrics and takeaways are deterministic. Daily headlines and introductions may be model-assisted, constrained to the same stored facts; weekly prose is deterministic.",
          "fixedTenors": "Fixed-tenor measures are published only when listed expiries bracket the target at both comparison snapshots. Targets outside either observable range are suppressed, not extrapolated; headline rankings use only supported tenors.",
          "smileReconstruction": "Listed-expiry smiles are reconstructed from stored SVI total-variance parameters on a fixed log-moneyness grid.",
          "ultraShortExpiry": "Expiries with fewer than 2 full days remaining stay in detailed tables but are excluded from headline rankings. Settlement proximity, time decay, changing liquidity and fewer quotes can exaggerate their changes.",
          "causalClaims": "The report describes observed surface and realised-volatility changes only and does not infer unsupported market drivers, flows or forecasts.",
          "realisedVolatility": "Annualised root-mean-square of one-minute canonical BTC-USD index log returns using a 365-day basis; all windows end at the current snapshot."
        },
        "realisedVolatility": {
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          "fallbackPolicy": "Missing canonical minutes use the stored Deribit index first, then the stored OKX index; canonical bars always take precedence.",
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          "spotWindowStart": "2026-09-19T16:30:00+00:00",
          "spotMetric": "spot-index return",
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          "rv7dPercent": 37.12,
          "rv30dPercent": 37.29,
          "observations": {
            "24h": 1440,
            "7d": 10080,
            "30d": 43200
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          "oneWeekAtmIvPercent": 33.98,
          "oneWeekIvMinus7dRvPoints": -3.14,
          "oneWeekIvMinus24hRvPoints": 8.25,
          "oneWeekIvMinus30dRvPoints": -3.31
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        "fitQuality": {
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          "previousObjective": 0.10302432,
          "currentLiveError": 89.89898903,
          "previousLiveError": 140.84992662
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        "coverage": {
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          "previousListedExpiries": 12,
          "comparedListedExpiries": 11,
          "addedExpiries": [
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          "removedExpiries": [
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            "2W",
            "1M",
            "3M",
            "6M",
            "9M"
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          "suppressedFixedTenors": [
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        "commentary": {
          "source": "codex",
          "model": "gpt-5.6-terra",
          "headline": "Bitcoin options reprice toward put-side volatility",
          "executiveSummary": "Bitcoin two-week RR25 moved 1.28 volatility points toward puts to -0.26% at the cutoff, leaving put-side volatility richer than call-side volatility. The skew move was notable relative to comparable history, while front-end ATM IV eased.",
          "evidenceIds": [
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            "front-atm"
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          "newsSummary": "The Block reported that Bitcoin ETFs recorded a $433 million Friday net inflow, led by Fidelity’s FBTC, while Ether funds snapped a four-week inflow streak.",
          "marketContextSummary": "The ETF-flow report is relevant market context, but the available evidence does not establish that it caused Bitcoin’s options repricing.",
          "marketContext": [
            {
              "title": "ETF-flow report and Bitcoin skew",
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              "id": "realised-vol",
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            },
            {
              "id": "front-atm",
              "label": "Front end",
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            },
            {
              "id": "back-atm",
              "label": "Long end",
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            },
            {
              "id": "rr25",
              "label": "Skew",
              "text": "RR25 moved towards puts, averaging -0.67 volatility points to -0.85% across the six headline tenors."
            },
            {
              "id": "bf25",
              "label": "Convexity",
              "text": "BF25 decreased, averaging -0.11 volatility points to 1.94% across the six headline tenors."
            },
            {
              "id": "largest-standard-tenor",
              "label": "Largest standard-tenor move",
              "text": "The largest standard-tenor ATM IV move was -0.85 volatility points at 2W, to 33.70%.",
              "tenor": "2W",
              "value": -0.85
            }
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            "publishersRepresented": 1,
            "discoveryEventsScanned": 238,
            "upstreamFeedCount": null,
            "coverageNote": "The local news MCP exposes canonical events, not its upstream feed inventory; legacy feed-count fields below describe the single MCP endpoint and are not comparable with the former RSS collector."
          },
          "selection": {
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            "publishersQueried": 1,
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            "articlesPassingTimeFilter": 1,
            "articlesPassingSourceRelevanceRules": 1,
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            ],
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              "id": "778fac37-92fe-4da0-b881-d566c653f62a",
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              ],
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                },
                "relevanceReasons": [
                  "Retained as contemporaneous price context alongside Forward 23SEP26: -639.28 USD (-0.78%) to 81212.63 USD; the surface data does not establish a causal relationship."
                ],
                "selectionReason": "Retained as contemporaneous price context alongside Forward 23SEP26: -639.28 USD (-0.78%) to 81212.63 USD; the surface data does not establish a causal relationship.",
                "canonicalEventId": "778fac37-92fe-4da0-b881-d566c653f62a",
                "status": "selected",
                "relevance": "broader crypto",
                "relationship": "neutral",
                "causal_confidence": "low",
                "matched_signals": [
                  "Forward 23SEP26: -639.28 USD (-0.78%) to 81212.63 USD",
                  "ATM IV 2W: down 0.85 points to 33.70%"
                ],
                "selection_reason": "Retained as contemporaneous price context alongside Forward 23SEP26: -639.28 USD (-0.78%) to 81212.63 USD; the surface data does not establish a causal relationship.",
                "event_cluster_id": "market-event-e8bec3b936c3"
              },
              "additional_coverage": []
            }
          ]
        },
        "newsContext": {
          "outcome": "Relevant context found; no confirmed catalyst",
          "highest_causal_confidence": "low",
          "section_heading": "Relevant market event",
          "events": [
            {
              "event_cluster_id": "market-event-e8bec3b936c3",
              "status": "selected",
              "relevance": "broader crypto",
              "relationship": "neutral",
              "causal_confidence": "low",
              "matched_signals": [
                "Forward 23SEP26: -639.28 USD (-0.78%) to 81212.63 USD",
                "ATM IV 2W: down 0.85 points to 33.70%"
              ],
              "selection_reason": "Retained as contemporaneous price context alongside Forward 23SEP26: -639.28 USD (-0.78%) to 81212.63 USD; the surface data does not establish a causal relationship.",
              "primary_article": {
                "id": "778fac37-92fe-4da0-b881-d566c653f62a",
                "sourceId": "the_block",
                "publisher": "The Block",
                "title": "Bitcoin ETFs eke out positive week with $433 million Friday inflow as ether funds snap four-week inflow streak",
                "url": "https://www.theblock.co/news/markets/2026-09-19-bitcoin-etfs-eke-out-positive-week-with-433-million-friday-inflow-as-ether-funds-snap-four-week-inflow-streak-415871",
                "publishedAt": "2026-09-19T18:01:09+00:00",
                "summary": "Fidelity's FBTC accounted for $310.7 million of Friday’s overall $433 million net inflow, helping offset earlier withdrawals.",
                "matchedTerms": [
                  "BTC",
                  "ETH"
                ],
                "topics": [
                  "institutional",
                  "etf_flow"
                ],
                "sourceKind": "media",
                "rightsStatus": "link-and-summary",
                "selectionScore": 34,
                "quality": {
                  "eligible": true,
                  "score": 34.4,
                  "checks": {
                    "verifiedSourceMetadata": true,
                    "contentKind": true,
                    "status": true
                  },
                  "sourceCount": 1,
                  "sourceQuality": 0.5934,
                  "signals": {
                    "confidence": 0.53,
                    "importance": 0.39,
                    "novelty": 1.0,
                    "corroboration": 0.0,
                    "sourceQuality": 0.5934,
                    "effectiveSourceQuality": 0.5934,
                    "catalystScore": 0.0736,
                    "effectiveCatalystScore": 0.0736,
                    "contentKind": "reporting",
                    "status": "developing"
                  },
                  "thresholds": {
                    "minimumConfidence": null,
                    "minimumImportance": null,
                    "minimumSourceQuality": 0.58,
                    "minimumCatalystScore": null,
                    "minimumMediaReliability": 0.6
                  },
                  "policy": "source-backed-context-v1",
                  "role": "context",
                  "attributionRequired": true
                },
                "relevanceReasons": [
                  "Retained as contemporaneous price context alongside Forward 23SEP26: -639.28 USD (-0.78%) to 81212.63 USD; the surface data does not establish a causal relationship."
                ],
                "selectionReason": "Retained as contemporaneous price context alongside Forward 23SEP26: -639.28 USD (-0.78%) to 81212.63 USD; the surface data does not establish a causal relationship.",
                "canonicalEventId": "778fac37-92fe-4da0-b881-d566c653f62a",
                "status": "selected",
                "relevance": "broader crypto",
                "relationship": "neutral",
                "causal_confidence": "low",
                "matched_signals": [
                  "Forward 23SEP26: -639.28 USD (-0.78%) to 81212.63 USD",
                  "ATM IV 2W: down 0.85 points to 33.70%"
                ],
                "selection_reason": "Retained as contemporaneous price context alongside Forward 23SEP26: -639.28 USD (-0.78%) to 81212.63 USD; the surface data does not establish a causal relationship.",
                "event_cluster_id": "market-event-e8bec3b936c3"
              },
              "additional_coverage": []
            }
          ],
          "coverage_status": "healthy",
          "coverage_basis": "monitored-source-search"
        },
        "marketRead": {
          "text": "2W RR25 moved 1.28 volatility points toward puts to -0.26%, leaving puts richer than calls; this was a notable move at the 80th percentile among 149 comparable historical observations. At the cutoff, realised volatility measured 25.73% over 24 hours, 37.12% over seven days and 37.29% over 30 days. Front-end ATM IV averaged 33.90%, -0.37 points from the prior snapshot, while the long end averaged 38.50%, +0.24 points. 2W ATM IV fell 0.85 volatility points to 33.70%. 2W BF25 fell 0.14 volatility points to 1.68%. The nearest eligible forward, 23SEP26, fell $639.28 (-0.78%) to $81,212.63. Relevant context found; no confirmed catalyst; the strongest assessed relationship has low causal confidence.",
          "wordCount": 108,
          "source": "deterministic structured report facts",
          "evidenceFields": [
            "summaryMetrics.largestAtmMove",
            "realisedVolatility.rv24hPercent",
            "realisedVolatility.rv7dPercent",
            "realisedVolatility.rv30dPercent",
            "summaryMetrics.frontEndAverageAtm",
            "summaryMetrics.longEndAverageAtm",
            "summaryMetrics.largestRr25Move",
            "summaryMetrics.largestBf25Move",
            "summaryMetrics.nearestEligibleForwardMove",
            "newsContext.outcome",
            "newsContext.highest_causal_confidence"
          ]
        },
        "facts": [
          {
            "id": "realised-vol",
            "label": "Implied versus realised",
            "text": "At the 16:30 UTC cutoff, 1W ATM IV was 33.98%, 3.14 volatility points below seven-day realised volatility of 37.12%; 24-hour realised volatility was 25.73% and 30-day realised volatility was 37.29%."
          },
          {
            "id": "front-atm",
            "label": "Front end",
            "text": "Front-end ATM IV decreased, averaging -0.37 volatility points to 33.90% across 1W, 2W and 1M."
          },
          {
            "id": "back-atm",
            "label": "Long end",
            "text": "Long-dated ATM IV increased, averaging +0.24 volatility points to 38.50% across 6M and 1Y."
          },
          {
            "id": "rr25",
            "label": "Skew",
            "text": "RR25 moved towards puts, averaging -0.67 volatility points to -0.85% across the six headline tenors."
          },
          {
            "id": "bf25",
            "label": "Convexity",
            "text": "BF25 decreased, averaging -0.11 volatility points to 1.94% across the six headline tenors."
          },
          {
            "id": "largest-standard-tenor",
            "label": "Largest standard-tenor move",
            "text": "The largest standard-tenor ATM IV move was -0.85 volatility points at 2W, to 33.70%.",
            "tenor": "2W",
            "value": -0.85
          }
        ],
        "summaryMetrics": {
          "basis": "Fixed-tenor endpoint comparison",
          "unit": "volatility points",
          "atmIvChange": -0.12,
          "rr25Change": -0.67,
          "bf25Change": -0.11,
          "largestAtmMove": {
            "tenor": "2W",
            "current": 33.7,
            "previous": 34.55,
            "change": -0.85,
            "historicalSignificance": {
              "absoluteMove": 0.85,
              "movePercentile30d": 33.3,
              "movePercentileFullHistory": 38.9,
              "currentLevelPercentileFullHistory": 23.3,
              "classificationPercentile": 38.9,
              "label": "routine",
              "observations30d": 30,
              "observationsFullHistory": 149,
              "levelObservationsFullHistory": 150
            }
          },
          "frontEndAverageAtm": {
            "current": 33.9,
            "previous": 34.28,
            "change": -0.37
          },
          "longEndAverageAtm": {
            "current": 38.5,
            "previous": 38.26,
            "change": 0.24
          },
          "oneYearMinusOneWeekAtmSlope": {
            "current": null,
            "previous": null,
            "change": null
          },
          "largestRr25Move": {
            "tenor": "2W",
            "current": -0.26,
            "previous": 1.02,
            "change": -1.28,
            "historicalSignificance": {
              "absoluteMove": 1.28,
              "movePercentile30d": 70.0,
              "movePercentileFullHistory": 80.5,
              "currentLevelPercentileFullHistory": 87.3,
              "classificationPercentile": 80.5,
              "label": "notable",
              "observations30d": 30,
              "observationsFullHistory": 149,
              "levelObservationsFullHistory": 150
            },
            "direction": "toward puts",
            "currentSign": "put-rich"
          },
          "largestBf25Move": {
            "tenor": "2W",
            "current": 1.68,
            "previous": 1.82,
            "change": -0.14,
            "historicalSignificance": {
              "absoluteMove": 0.14,
              "movePercentile30d": 43.3,
              "movePercentileFullHistory": 49.7,
              "currentLevelPercentileFullHistory": 18.7,
              "classificationPercentile": 49.7,
              "label": "routine",
              "observations30d": 30,
              "observationsFullHistory": 149,
              "levelObservationsFullHistory": 150
            }
          },
          "nearestEligibleForwardMove": {
            "label": "23SEP26",
            "daysToExpiry": 2.646,
            "current": 81212.63,
            "previous": 81851.91,
            "change": -639.28,
            "percentChange": -0.78
          }
        },
        "tenors": [
          {
            "tenor": "1W",
            "targetExpiry": 1790526600846,
            "availability": "available",
            "unavailableReason": null,
            "atmIv": {
              "current": 33.98,
              "previous": 34.28,
              "change": -0.3,
              "percentChange": -0.88
            },
            "rr25": {
              "current": -0.11,
              "previous": 0.97,
              "change": -1.08,
              "percentChange": -111.34
            },
            "bf25": {
              "current": 1.81,
              "previous": 1.91,
              "change": -0.1,
              "percentChange": -5.24
            },
            "historicalSignificance": {
              "atmIv": {
                "absoluteMove": 0.3,
                "movePercentile30d": 0.0,
                "movePercentileFullHistory": 8.7,
                "currentLevelPercentileFullHistory": 33.3,
                "classificationPercentile": 8.7,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "rr25": {
                "absoluteMove": 1.08,
                "movePercentile30d": 46.7,
                "movePercentileFullHistory": 66.4,
                "currentLevelPercentileFullHistory": 86.7,
                "classificationPercentile": 66.4,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "bf25": {
                "absoluteMove": 0.1,
                "movePercentile30d": 26.7,
                "movePercentileFullHistory": 36.9,
                "currentLevelPercentileFullHistory": 42.7,
                "classificationPercentile": 36.9,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              }
            }
          },
          {
            "tenor": "2W",
            "targetExpiry": 1791131400846,
            "availability": "available",
            "unavailableReason": null,
            "atmIv": {
              "current": 33.7,
              "previous": 34.55,
              "change": -0.85,
              "percentChange": -2.46
            },
            "rr25": {
              "current": -0.26,
              "previous": 1.02,
              "change": -1.28,
              "percentChange": -125.49
            },
            "bf25": {
              "current": 1.68,
              "previous": 1.82,
              "change": -0.14,
              "percentChange": -7.69
            },
            "historicalSignificance": {
              "atmIv": {
                "absoluteMove": 0.85,
                "movePercentile30d": 33.3,
                "movePercentileFullHistory": 38.9,
                "currentLevelPercentileFullHistory": 23.3,
                "classificationPercentile": 38.9,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "rr25": {
                "absoluteMove": 1.28,
                "movePercentile30d": 70.0,
                "movePercentileFullHistory": 80.5,
                "currentLevelPercentileFullHistory": 87.3,
                "classificationPercentile": 80.5,
                "label": "notable",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "bf25": {
                "absoluteMove": 0.14,
                "movePercentile30d": 43.3,
                "movePercentileFullHistory": 49.7,
                "currentLevelPercentileFullHistory": 18.7,
                "classificationPercentile": 49.7,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              }
            }
          },
          {
            "tenor": "1M",
            "targetExpiry": 1792513800846,
            "availability": "available",
            "unavailableReason": null,
            "atmIv": {
              "current": 34.03,
              "previous": 34.0,
              "change": 0.03,
              "percentChange": 0.09
            },
            "rr25": {
              "current": -1.27,
              "previous": -0.42,
              "change": -0.85,
              "percentChange": -202.38
            },
            "bf25": {
              "current": 1.77,
              "previous": 1.88,
              "change": -0.11,
              "percentChange": -5.85
            },
            "historicalSignificance": {
              "atmIv": {
                "absoluteMove": 0.03,
                "movePercentile30d": 0.0,
                "movePercentileFullHistory": 2.0,
                "currentLevelPercentileFullHistory": 18.7,
                "classificationPercentile": 2.0,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "rr25": {
                "absoluteMove": 0.85,
                "movePercentile30d": 66.7,
                "movePercentileFullHistory": 76.5,
                "currentLevelPercentileFullHistory": 84.0,
                "classificationPercentile": 76.5,
                "label": "notable",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "bf25": {
                "absoluteMove": 0.11,
                "movePercentile30d": 50.0,
                "movePercentileFullHistory": 58.4,
                "currentLevelPercentileFullHistory": 1.3,
                "classificationPercentile": 58.4,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              }
            }
          },
          {
            "tenor": "3M",
            "targetExpiry": 1797784200846,
            "availability": "available",
            "unavailableReason": null,
            "atmIv": {
              "current": 37.04,
              "previous": 36.74,
              "change": 0.3,
              "percentChange": 0.82
            },
            "rr25": {
              "current": -1.6,
              "previous": -1.39,
              "change": -0.21,
              "percentChange": -15.11
            },
            "bf25": {
              "current": 2.04,
              "previous": 2.13,
              "change": -0.09,
              "percentChange": -4.23
            },
            "historicalSignificance": {
              "atmIv": {
                "absoluteMove": 0.3,
                "movePercentile30d": 33.3,
                "movePercentileFullHistory": 45.0,
                "currentLevelPercentileFullHistory": 10.0,
                "classificationPercentile": 45.0,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "rr25": {
                "absoluteMove": 0.21,
                "movePercentile30d": 36.7,
                "movePercentileFullHistory": 37.6,
                "currentLevelPercentileFullHistory": 81.3,
                "classificationPercentile": 37.6,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "bf25": {
                "absoluteMove": 0.09,
                "movePercentile30d": 43.3,
                "movePercentileFullHistory": 61.1,
                "currentLevelPercentileFullHistory": 9.3,
                "classificationPercentile": 61.1,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              }
            }
          },
          {
            "tenor": "6M",
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            "availability": "available",
            "unavailableReason": null,
            "atmIv": {
              "current": 38.5,
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              "change": 0.24,
              "percentChange": 0.63
            },
            "rr25": {
              "current": -0.99,
              "previous": -1.07,
              "change": 0.08,
              "percentChange": 7.48
            },
            "bf25": {
              "current": 2.41,
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              "change": -0.1,
              "percentChange": -3.98
            },
            "historicalSignificance": {
              "atmIv": {
                "absoluteMove": 0.24,
                "movePercentile30d": 40.0,
                "movePercentileFullHistory": 52.3,
                "currentLevelPercentileFullHistory": 2.7,
                "classificationPercentile": 52.3,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "rr25": {
                "absoluteMove": 0.08,
                "movePercentile30d": 6.7,
                "movePercentileFullHistory": 17.4,
                "currentLevelPercentileFullHistory": 83.3,
                "classificationPercentile": 17.4,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "bf25": {
                "absoluteMove": 0.1,
                "movePercentile30d": 76.7,
                "movePercentileFullHistory": 70.5,
                "currentLevelPercentileFullHistory": 20.0,
                "classificationPercentile": 76.7,
                "label": "notable",
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                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              }
            }
          },
          {
            "tenor": "9M",
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            "availability": "available",
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            "atmIv": {
              "current": 39.59,
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              "change": 0.06,
              "percentChange": 0.15
            },
            "rr25": {
              "current": -0.78,
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              "change": -0.01,
              "percentChange": -1.3
            },
            "bf25": {
              "current": 2.48,
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              "change": -0.09,
              "percentChange": -3.5
            },
            "historicalSignificance": {
              "atmIv": {
                "absoluteMove": 0.06,
                "movePercentile30d": 6.7,
                "movePercentileFullHistory": 18.1,
                "currentLevelPercentileFullHistory": 2.0,
                "classificationPercentile": 18.1,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "rr25": {
                "absoluteMove": 0.01,
                "movePercentile30d": 6.7,
                "movePercentileFullHistory": 3.4,
                "currentLevelPercentileFullHistory": 86.7,
                "classificationPercentile": 6.7,
                "label": "routine",
                "observations30d": 30,
                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              },
              "bf25": {
                "absoluteMove": 0.09,
                "movePercentile30d": 70.0,
                "movePercentileFullHistory": 71.1,
                "currentLevelPercentileFullHistory": 36.7,
                "classificationPercentile": 71.1,
                "label": "notable",
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                "observationsFullHistory": 149,
                "levelObservationsFullHistory": 150
              }
            }
          },
          {
            "tenor": "1Y",
            "targetExpiry": 1821457800846,
            "availability": "unavailable",
            "unavailableReason": "The target tenor falls outside the listed-expiry range at one or both snapshots; extrapolated values are suppressed.",
            "atmIv": {
              "current": null,
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              "change": null,
              "percentChange": null
            },
            "rr25": {
              "current": null,
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            },
            "bf25": {
              "current": null,
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              "percentChange": null
            },
            "historicalSignificance": {
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                "movePercentileFullHistory": null,
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                "classificationPercentile": null,
                "label": "unavailable",
                "observations30d": 0,
                "observationsFullHistory": 0,
                "levelObservationsFullHistory": 0
              },
              "rr25": {
                "absoluteMove": null,
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                "movePercentileFullHistory": null,
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                "classificationPercentile": null,
                "label": "unavailable",
                "observations30d": 0,
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                "levelObservationsFullHistory": 0
              },
              "bf25": {
                "absoluteMove": null,
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                "movePercentileFullHistory": null,
                "currentLevelPercentileFullHistory": null,
                "classificationPercentile": null,
                "label": "unavailable",
                "observations30d": 0,
                "observationsFullHistory": 0,
                "levelObservationsFullHistory": 0
              }
            }
          }
        ],
        "listedExpiries": [
          {
            "label": "21SEP26",
            "expiry": 1789977600000,
            "tauYears": 0.00176942,
            "daysToExpiry": 0.646,
            "expiryClassification": "ultra-short",
            "rankingEligible": false,
            "forward": {
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            },
            "atmIv": {
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              "change": 6.98,
              "percentChange": 29.17
            },
            "rr25": {
              "current": -0.31,
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              "change": -1.35,
              "percentChange": -129.81
            },
            "bf25": {
              "current": 2.33,
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              "percentChange": 64.08
            },
            "svi": {
              "a": {
                "current": -0.0098,
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                "percentChange": 49.14
              },
              "b": {
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                "percentChange": -20.31
              },
              "rho": {
                "current": -0.012,
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                "percentChange": -115.21
              },
              "m": {
                "current": -0.0015,
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              },
              "sigma": {
                "current": 0.1778,
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                "percentChange": -36.13
              }
            },
            "smile": {
              "logMoneyness": [
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        "marketDiary": {
          "schemaVersion": 1,
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          "generatedAt": "2026-09-20T16:30:00+00:00",
          "window": {
            "startAt": "2026-09-19T16:30:00+00:00",
            "endAt": "2026-09-20T16:30:00+00:00",
            "endExclusive": true
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          "headline": "Bitcoin options turn defensive as two-week skew swings toward puts",
          "standfirst": "Bitcoin two-week RR25 fell 1.28 volatility points to -0.26% at the 16:30 UTC cutoff, moving from call-rich to put-rich pricing and marking a notable 80.5 percentile move in comparable history. Bitcoin two-week ATM IV simultaneously fell 0.85 points to 33.70%, while Bitcoin’s 24-hour spot-index return was -0.83%. Derivasys data show one-week ATM IV at 33.98%, 3.14 points below seven-day realised volatility of 37.12%.",
          "days": [
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              "headline": "Bitcoin skew shifts toward puts",
              "summary": "Bitcoin two-week RR25 crossed below zero as short-dated implied volatility softened at the cutoff.",
              "macro": {
                "summary": "No qualifying macro context was retained.",
                "events": []
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                "summary": "The Block reported Friday net inflows into Bitcoin ETFs and an end to Ether funds’ four-week inflow streak.",
                "events": [
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                    "eventId": "778fac37-92fe-4da0-b881-d566c653f62a",
                    "title": "Bitcoin ETFs eke out positive week with $433 million Friday inflow as ether funds snap four-week inflow streak",
                    "publisher": "The Block",
                    "url": "https://www.theblock.co/news/markets/2026-09-19-bitcoin-etfs-eke-out-positive-week-with-433-million-friday-inflow-as-ether-funds-snap-four-week-inflow-streak-415871",
                    "publishedAt": "2026-09-19T18:01:09+00:00"
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        "newsStatus": "context",
        "headline": "Bitcoin options turn defensive as two-week skew swings toward puts",
        "standfirst": "Bitcoin two-week RR25 fell 1.28 volatility points to -0.26% at the 16:30 UTC cutoff, moving from call-rich to put-rich pricing and marking a notable 80.5 percentile move in comparable history. Bitcoin two-week ATM IV simultaneously fell 0.85 points to 33.70%, while Bitcoin’s 24-hour spot-index return was -0.83%. Derivasys data show one-week ATM IV at 33.98%, 3.14 points below seven-day realised volatility of 37.12%.",
        "crossAssetMarketContext": {
          "schemaVersion": 1,
          "source": "market-context-mcp",
          "status": "available",
          "asset": "BTC",
          "sessionDate": "2026-09-18",
          "asOfTimestamp": "2026-09-18T20:00:00+00:00",
          "summary": "Previous session (latest completed): Persisted common-session context returned for the 2026-09-18 US close; requested as_of was 2026-09-20T16:30:00+00:00. The crypto-to-SPX realised-volatility ratio was 4.51, at the 82.7 percentile across 237 prior observations. The 60-session crypto-SPX return correlation was 0.27 from 60 aligned observations.",
          "regimeInsights": [
            "The crypto-to-SPX realised-volatility ratio was 4.51, at the 82.7 percentile across 237 prior observations.",
            "The 60-session crypto-SPX return correlation was 0.27 from 60 aligned observations."
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          "metrics": {
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            "vix": 14.8100004196167,
            "vix9d": 12.270000457763672,
            "vix3m": 18.239999771118164,
            "ivSpread": 19.4099995803833,
            "ivRatio": 2.310600879840195,
            "cryptoRealisedVol20d": 42.3021912695404,
            "spxRealisedVol20": 9.376313403524426,
            "rvSpread": 32.92587786601597,
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            "rvRatioPercentile": 82.70042194092827,
            "rvRatioPercentileSampleCount": 237,
            "returnCorrelation30": 0.2650908950241892,
            "returnCorrelation30SampleCount": 30,
            "returnCorrelation60": 0.26986705348583195,
            "returnCorrelation60SampleCount": 60
          },
          "methodology": "Derivasys cross-asset metrics at 2026-09-18T20:00:00Z; crypto RV annualizes with sqrt(365), SPX RV with sqrt(252)."
        }
      },
      "oneWeek": {
        "tenor": "1W",
        "targetExpiry": 1790526600846,
        "availability": "available",
        "unavailableReason": null,
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          "change": -0.3,
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        "rr25": {
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          "change": -1.08,
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        "bf25": {
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          "percentChange": -5.24
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        "historicalSignificance": {
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            "movePercentile30d": 0.0,
            "movePercentileFullHistory": 8.7,
            "currentLevelPercentileFullHistory": 33.3,
            "classificationPercentile": 8.7,
            "label": "routine",
            "observations30d": 30,
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            "levelObservationsFullHistory": 150
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          "rr25": {
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            "movePercentile30d": 46.7,
            "movePercentileFullHistory": 66.4,
            "currentLevelPercentileFullHistory": 86.7,
            "classificationPercentile": 66.4,
            "label": "routine",
            "observations30d": 30,
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            "levelObservationsFullHistory": 150
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          "bf25": {
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      "asset": "ETH",
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        "reportDate": "2026-09-20",
        "generatedAt": "2026-09-20T16:31:12+00:00",
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        "previousSnapshotAt": "2026-09-19T16:30:00+00:00",
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        },
        "windowHours": 24.0,
        "currency": "ETH",
        "methodology": {
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          "comparison": "Nearest successful surface snapshots approximately 24 hours apart",
          "rrConvention": "25-delta call IV minus 25-delta put IV",
          "bfConvention": "Average 25-delta wing IV minus ATM forward IV",
          "greeks": "Black forward Greeks for a normalized one-ETH ATM-forward call, zero rate, fitted SVI IV",
          "commentary": "Metrics and takeaways are deterministic. Daily headlines and introductions may be model-assisted, constrained to the same stored facts; weekly prose is deterministic.",
          "fixedTenors": "Fixed-tenor measures are published only when listed expiries bracket the target at both comparison snapshots. Targets outside either observable range are suppressed, not extrapolated; headline rankings use only supported tenors.",
          "smileReconstruction": "Listed-expiry smiles are reconstructed from stored SVI total-variance parameters on a fixed log-moneyness grid.",
          "ultraShortExpiry": "Expiries with fewer than 2 full days remaining stay in detailed tables but are excluded from headline rankings. Settlement proximity, time decay, changing liquidity and fewer quotes can exaggerate their changes.",
          "causalClaims": "The report describes observed surface and realised-volatility changes only and does not infer unsupported market drivers, flows or forecasts.",
          "realisedVolatility": "Annualised root-mean-square of one-minute canonical ETH-USD index log returns using a 365-day basis; all windows end at the current snapshot."
        },
        "realisedVolatility": {
          "source": "canonical/ETH-USD-INDEX (DERIBIT and OKX indexes)",
          "fallbackObservations": 85,
          "fallbackPolicy": "Missing canonical minutes use the stored Deribit index first, then the stored OKX index; canonical bars always take precedence.",
          "samplingInterval": "1 minute",
          "annualizationBasis": "365 days",
          "windowEnd": "2026-09-20T16:30:00+00:00",
          "spotWindowStart": "2026-09-19T16:30:00+00:00",
          "spotMetric": "spot-index return",
          "spotUnit": "percent",
          "spotMove24hPercent": -1.03,
          "rv24hPercent": 41.69,
          "rv7dPercent": 52.4,
          "rv30dPercent": 52.12,
          "observations": {
            "24h": 1440,
            "7d": 10080,
            "30d": 43200
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          "oneWeekAtmIvPercent": 48.08,
          "oneWeekIvMinus7dRvPoints": -4.32,
          "oneWeekIvMinus24hRvPoints": 6.39,
          "oneWeekIvMinus30dRvPoints": -4.04
        },
        "fitQuality": {
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          "previousObjective": 0.43549541,
          "currentLiveError": 47.71985298,
          "previousLiveError": 344.97745824
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        "coverage": {
          "currentListedExpiries": 12,
          "previousListedExpiries": 12,
          "comparedListedExpiries": 11,
          "addedExpiries": [
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          "removedExpiries": [
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          "fixedTenors": [
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            "1M",
            "3M",
            "6M",
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          "suppressedFixedTenors": [
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        "commentary": {
          "source": "codex",
          "model": "gpt-5.6-terra",
          "headline": "Ether skew softens while realised volatility stays higher",
          "executiveSummary": "Ether one-week RR25 fell 1.99 volatility points to 0.82%, reducing but preserving the relative richness of call-side volatility. One-week implied volatility remained below the seven-day realised-volatility reading at the cutoff.",
          "evidenceIds": [
            "rr25",
            "realised-vol"
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          "newsSummary": "The Block reported a $433 million Friday net inflow for Bitcoin ETFs and said Ether funds snapped a four-week inflow streak.",
          "marketContextSummary": "The fund-flow report is relevant context for Ether, but it does not demonstrate an explanation for the options-surface change.",
          "marketContext": [
            {
              "title": "Fund-flow report and Ether skew",
              "explanation": "The report covers Ether funds within the observation window, but no measured ETH-specific reaction establishes a direct link to the one-week RR25 decline.",
              "relationship": "no-clear-link",
              "confidence": "low",
              "surfaceEvidenceIds": [
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              "newsEvidenceIds": [
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          "takeaways": [
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              "id": "realised-vol",
              "label": "Implied versus realised",
              "text": "At the 16:30 UTC cutoff, 1W ATM IV was 48.08%, 4.32 volatility points below seven-day realised volatility of 52.40%; 24-hour realised volatility was 41.69% and 30-day realised volatility was 52.12%."
            },
            {
              "id": "front-atm",
              "label": "Front end",
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            },
            {
              "id": "back-atm",
              "label": "Long end",
              "text": "Long-dated ATM IV increased, averaging +0.24 volatility points to 54.47% across 6M and 1Y."
            },
            {
              "id": "rr25",
              "label": "Skew",
              "text": "RR25 moved towards puts, averaging -1.23 volatility points to 0.93% across the six headline tenors."
            },
            {
              "id": "bf25",
              "label": "Convexity",
              "text": "BF25 was broadly unchanged, averaging -0.01 volatility points to 3.06% across the six headline tenors."
            },
            {
              "id": "largest-standard-tenor",
              "label": "Largest standard-tenor move",
              "text": "The largest standard-tenor ATM IV move was -0.56 volatility points at 2W, to 47.36%.",
              "tenor": "2W",
              "value": -0.56
            }
          ]
        },
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                ]
              }
            ],
            "upstreamIngestionHealth": "not-exposed"
          },
          "generatedAt": "2026-09-20T16:30:00+00:00",
          "window": {
            "startAt": "2026-09-19T16:30:00+00:00",
            "endAt": "2026-09-20T16:30:00+00:00",
            "endExclusive": true
          },
          "coverage": {
            "configuredSources": 1,
            "successfulSources": 1,
            "failedSources": 0
          },
          "provenance": {
            "collectionArchitecture": "central-canonical-event-store",
            "mcpServersQueried": 1,
            "assetScopedQueries": 2,
            "macroQueries": 6,
            "canonicalEventsConsidered": 1,
            "publishersRepresented": 1,
            "discoveryEventsScanned": 238,
            "upstreamFeedCount": null,
            "coverageNote": "The local news MCP exposes canonical events, not its upstream feed inventory; legacy feed-count fields below describe the single MCP endpoint and are not comparable with the former RSS collector."
          },
          "selection": {
            "feedsQueried": 1,
            "publishersQueried": 1,
            "feedEntriesScanned": 1,
            "articlesPassingTimeFilter": 1,
            "articlesPassingSourceRelevanceRules": 1,
            "articlesPassingSelectionThreshold": 1,
            "storiesSelected": 1,
            "selectedPublishers": 1,
            "maximumStories": 3,
            "maximumStoriesPerPublisher": 2,
            "minimumSelectionScore": 0,
            "lockedEventSet": true,
            "qualityThresholds": {
              "minimumConfidence": null,
              "minimumImportance": null,
              "minimumSourceQuality": 0.58,
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            },
            "candidateAudit": [
              {
                "eventId": "778fac37-92fe-4da0-b881-d566c653f62a",
                "selected": true,
                "eligible": true,
                "checks": {
                  "verifiedSourceMetadata": true,
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                },
                "inWindow": true,
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                "decision": "selected"
              },
              {
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                "checks": {
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                  "status": true
                },
                "inWindow": false,
                "reportRelevant": false,
                "decision": "ineligible"
              }
            ],
            "planRationale": "The Block’s in-window ETF-flow report explicitly covers ether funds and its named media source meets the selection requirements. No measured ETH-specific reaction supports a causal claim, so it is context rather than a possible driver.",
            "eventsSelected": 1
          },
          "items": [
            {
              "id": "778fac37-92fe-4da0-b881-d566c653f62a",
              "sourceId": "the_block",
              "publisher": "The Block",
              "title": "Bitcoin ETFs eke out positive week with $433 million Friday inflow as ether funds snap four-week inflow streak",
              "url": "https://www.theblock.co/news/markets/2026-09-19-bitcoin-etfs-eke-out-positive-week-with-433-million-friday-inflow-as-ether-funds-snap-four-week-inflow-streak-415871",
              "publishedAt": "2026-09-19T18:01:09+00:00",
              "summary": "Fidelity's FBTC accounted for $310.7 million of Friday’s overall $433 million net inflow, helping offset earlier withdrawals.",
              "matchedTerms": [
                "BTC",
                "ETH"
              ],
              "topics": [
                "institutional",
                "etf_flow"
              ],
              "sourceKind": "media",
              "rightsStatus": "link-and-summary",
              "selectionScore": 34,
              "quality": {
                "eligible": true,
                "score": 34.4,
                "checks": {
                  "verifiedSourceMetadata": true,
                  "contentKind": true,
                  "status": true
                },
                "sourceCount": 1,
                "sourceQuality": 0.5934,
                "signals": {
                  "confidence": 0.53,
                  "importance": 0.39,
                  "novelty": 1.0,
                  "corroboration": 0.0,
                  "sourceQuality": 0.5934,
                  "effectiveSourceQuality": 0.5934,
                  "catalystScore": 0.0736,
                  "effectiveCatalystScore": 0.0736,
                  "contentKind": "reporting",
                  "status": "developing"
                },
                "thresholds": {
                  "minimumConfidence": null,
                  "minimumImportance": null,
                  "minimumSourceQuality": 0.58,
                  "minimumCatalystScore": null,
                  "minimumMediaReliability": 0.6
                },
                "policy": "source-backed-context-v1",
                "role": "context",
                "attributionRequired": true
              },
              "relevanceReasons": [
                "Retained as contemporaneous price context alongside Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD; the surface data does not establish a causal relationship."
              ],
              "selectionReason": "Retained as contemporaneous price context alongside Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD; the surface data does not establish a causal relationship.",
              "canonicalEventId": "778fac37-92fe-4da0-b881-d566c653f62a",
              "status": "selected",
              "relevance": "broader crypto",
              "relationship": "neutral",
              "causal_confidence": "low",
              "matched_signals": [
                "Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD",
                "ATM IV 2W: down 0.56 points to 47.36%"
              ],
              "selection_reason": "Retained as contemporaneous price context alongside Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD; the surface data does not establish a causal relationship.",
              "event_cluster_id": "market-event-e8bec3b936c3"
            }
          ],
          "events": [
            {
              "event_cluster_id": "market-event-e8bec3b936c3",
              "status": "selected",
              "relevance": "broader crypto",
              "relationship": "neutral",
              "causal_confidence": "low",
              "matched_signals": [
                "Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD",
                "ATM IV 2W: down 0.56 points to 47.36%"
              ],
              "selection_reason": "Retained as contemporaneous price context alongside Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD; the surface data does not establish a causal relationship.",
              "primary_article": {
                "id": "778fac37-92fe-4da0-b881-d566c653f62a",
                "sourceId": "the_block",
                "publisher": "The Block",
                "title": "Bitcoin ETFs eke out positive week with $433 million Friday inflow as ether funds snap four-week inflow streak",
                "url": "https://www.theblock.co/news/markets/2026-09-19-bitcoin-etfs-eke-out-positive-week-with-433-million-friday-inflow-as-ether-funds-snap-four-week-inflow-streak-415871",
                "publishedAt": "2026-09-19T18:01:09+00:00",
                "summary": "Fidelity's FBTC accounted for $310.7 million of Friday’s overall $433 million net inflow, helping offset earlier withdrawals.",
                "matchedTerms": [
                  "BTC",
                  "ETH"
                ],
                "topics": [
                  "institutional",
                  "etf_flow"
                ],
                "sourceKind": "media",
                "rightsStatus": "link-and-summary",
                "selectionScore": 34,
                "quality": {
                  "eligible": true,
                  "score": 34.4,
                  "checks": {
                    "verifiedSourceMetadata": true,
                    "contentKind": true,
                    "status": true
                  },
                  "sourceCount": 1,
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                  "signals": {
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                    "importance": 0.39,
                    "novelty": 1.0,
                    "corroboration": 0.0,
                    "sourceQuality": 0.5934,
                    "effectiveSourceQuality": 0.5934,
                    "catalystScore": 0.0736,
                    "effectiveCatalystScore": 0.0736,
                    "contentKind": "reporting",
                    "status": "developing"
                  },
                  "thresholds": {
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                  },
                  "policy": "source-backed-context-v1",
                  "role": "context",
                  "attributionRequired": true
                },
                "relevanceReasons": [
                  "Retained as contemporaneous price context alongside Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD; the surface data does not establish a causal relationship."
                ],
                "selectionReason": "Retained as contemporaneous price context alongside Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD; the surface data does not establish a causal relationship.",
                "canonicalEventId": "778fac37-92fe-4da0-b881-d566c653f62a",
                "status": "selected",
                "relevance": "broader crypto",
                "relationship": "neutral",
                "causal_confidence": "low",
                "matched_signals": [
                  "Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD",
                  "ATM IV 2W: down 0.56 points to 47.36%"
                ],
                "selection_reason": "Retained as contemporaneous price context alongside Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD; the surface data does not establish a causal relationship.",
                "event_cluster_id": "market-event-e8bec3b936c3"
              },
              "additional_coverage": []
            }
          ]
        },
        "newsContext": {
          "outcome": "Relevant context found; no confirmed catalyst",
          "highest_causal_confidence": "low",
          "section_heading": "Relevant market event",
          "events": [
            {
              "event_cluster_id": "market-event-e8bec3b936c3",
              "status": "selected",
              "relevance": "broader crypto",
              "relationship": "neutral",
              "causal_confidence": "low",
              "matched_signals": [
                "Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD",
                "ATM IV 2W: down 0.56 points to 47.36%"
              ],
              "selection_reason": "Retained as contemporaneous price context alongside Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD; the surface data does not establish a causal relationship.",
              "primary_article": {
                "id": "778fac37-92fe-4da0-b881-d566c653f62a",
                "sourceId": "the_block",
                "publisher": "The Block",
                "title": "Bitcoin ETFs eke out positive week with $433 million Friday inflow as ether funds snap four-week inflow streak",
                "url": "https://www.theblock.co/news/markets/2026-09-19-bitcoin-etfs-eke-out-positive-week-with-433-million-friday-inflow-as-ether-funds-snap-four-week-inflow-streak-415871",
                "publishedAt": "2026-09-19T18:01:09+00:00",
                "summary": "Fidelity's FBTC accounted for $310.7 million of Friday’s overall $433 million net inflow, helping offset earlier withdrawals.",
                "matchedTerms": [
                  "BTC",
                  "ETH"
                ],
                "topics": [
                  "institutional",
                  "etf_flow"
                ],
                "sourceKind": "media",
                "rightsStatus": "link-and-summary",
                "selectionScore": 34,
                "quality": {
                  "eligible": true,
                  "score": 34.4,
                  "checks": {
                    "verifiedSourceMetadata": true,
                    "contentKind": true,
                    "status": true
                  },
                  "sourceCount": 1,
                  "sourceQuality": 0.5934,
                  "signals": {
                    "confidence": 0.53,
                    "importance": 0.39,
                    "novelty": 1.0,
                    "corroboration": 0.0,
                    "sourceQuality": 0.5934,
                    "effectiveSourceQuality": 0.5934,
                    "catalystScore": 0.0736,
                    "effectiveCatalystScore": 0.0736,
                    "contentKind": "reporting",
                    "status": "developing"
                  },
                  "thresholds": {
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                    "minimumMediaReliability": 0.6
                  },
                  "policy": "source-backed-context-v1",
                  "role": "context",
                  "attributionRequired": true
                },
                "relevanceReasons": [
                  "Retained as contemporaneous price context alongside Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD; the surface data does not establish a causal relationship."
                ],
                "selectionReason": "Retained as contemporaneous price context alongside Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD; the surface data does not establish a causal relationship.",
                "canonicalEventId": "778fac37-92fe-4da0-b881-d566c653f62a",
                "status": "selected",
                "relevance": "broader crypto",
                "relationship": "neutral",
                "causal_confidence": "low",
                "matched_signals": [
                  "Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD",
                  "ATM IV 2W: down 0.56 points to 47.36%"
                ],
                "selection_reason": "Retained as contemporaneous price context alongside Forward 23SEP26: -28.81 USD (-1.09%) to 2620.86 USD; the surface data does not establish a causal relationship.",
                "event_cluster_id": "market-event-e8bec3b936c3"
              },
              "additional_coverage": []
            }
          ],
          "coverage_status": "healthy",
          "coverage_basis": "monitored-source-search"
        },
        "marketRead": {
          "text": "1W RR25 moved 1.99 volatility points toward puts to 0.82%, leaving calls richer than puts; this was a routine move at the 67th percentile among 33 comparable historical observations. At the cutoff, realised volatility measured 41.69% over 24 hours, 52.40% over seven days and 52.12% over 30 days. Front-end ATM IV averaged 47.97%, -0.33 points from the prior snapshot, while the long end averaged 54.47%, +0.24 points. 2W ATM IV fell 0.56 volatility points to 47.36%. 6M BF25 rose 0.17 volatility points to 3.32%. The nearest eligible forward, 23SEP26, fell $28.81 (-1.09%) to $2,620.86. Relevant context found; no confirmed catalyst; the strongest assessed relationship has low causal confidence.",
          "wordCount": 108,
          "source": "deterministic structured report facts",
          "evidenceFields": [
            "summaryMetrics.largestAtmMove",
            "realisedVolatility.rv24hPercent",
            "realisedVolatility.rv7dPercent",
            "realisedVolatility.rv30dPercent",
            "summaryMetrics.frontEndAverageAtm",
            "summaryMetrics.longEndAverageAtm",
            "summaryMetrics.largestRr25Move",
            "summaryMetrics.largestBf25Move",
            "summaryMetrics.nearestEligibleForwardMove",
            "newsContext.outcome",
            "newsContext.highest_causal_confidence"
          ]
        },
        "facts": [
          {
            "id": "realised-vol",
            "label": "Implied versus realised",
            "text": "At the 16:30 UTC cutoff, 1W ATM IV was 48.08%, 4.32 volatility points below seven-day realised volatility of 52.40%; 24-hour realised volatility was 41.69% and 30-day realised volatility was 52.12%."
          },
          {
            "id": "front-atm",
            "label": "Front end",
            "text": "Front-end ATM IV decreased, averaging -0.33 volatility points to 47.97% across 1W, 2W and 1M."
          },
          {
            "id": "back-atm",
            "label": "Long end",
            "text": "Long-dated ATM IV increased, averaging +0.24 volatility points to 54.47% across 6M and 1Y."
          },
          {
            "id": "rr25",
            "label": "Skew",
            "text": "RR25 moved towards puts, averaging -1.23 volatility points to 0.93% across the six headline tenors."
          },
          {
            "id": "bf25",
            "label": "Convexity",
            "text": "BF25 was broadly unchanged, averaging -0.01 volatility points to 3.06% across the six headline tenors."
          },
          {
            "id": "largest-standard-tenor",
            "label": "Largest standard-tenor move",
            "text": "The largest standard-tenor ATM IV move was -0.56 volatility points at 2W, to 47.36%.",
            "tenor": "2W",
            "value": -0.56
          }
        ],
        "summaryMetrics": {
          "basis": "Fixed-tenor endpoint comparison",
          "unit": "volatility points",
          "atmIvChange": -0.2,
          "rr25Change": -1.23,
          "bf25Change": -0.01,
          "largestAtmMove": {
            "tenor": "2W",
            "current": 47.36,
            "previous": 47.92,
            "change": -0.56,
            "historicalSignificance": {
              "absoluteMove": 0.56,
              "movePercentile30d": 17.2,
              "movePercentileFullHistory": 24.2,
              "currentLevelPercentileFullHistory": 19.4,
              "classificationPercentile": 24.2,
              "label": "routine",
              "observations30d": 29,
              "observationsFullHistory": 33,
              "levelObservationsFullHistory": 36
            }
          },
          "frontEndAverageAtm": {
            "current": 47.97,
            "previous": 48.31,
            "change": -0.33
          },
          "longEndAverageAtm": {
            "current": 54.47,
            "previous": 54.23,
            "change": 0.24
          },
          "oneYearMinusOneWeekAtmSlope": {
            "current": null,
            "previous": null,
            "change": null
          },
          "largestRr25Move": {
            "tenor": "1W",
            "current": 0.82,
            "previous": 2.81,
            "change": -1.99,
            "historicalSignificance": {
              "absoluteMove": 1.99,
              "movePercentile30d": 65.5,
              "movePercentileFullHistory": 66.7,
              "currentLevelPercentileFullHistory": 61.1,
              "classificationPercentile": 66.7,
              "label": "routine",
              "observations30d": 29,
              "observationsFullHistory": 33,
              "levelObservationsFullHistory": 36
            },
            "direction": "toward puts",
            "currentSign": "call-rich"
          },
          "largestBf25Move": {
            "tenor": "6M",
            "current": 3.32,
            "previous": 3.15,
            "change": 0.17,
            "historicalSignificance": {
              "absoluteMove": 0.17,
              "movePercentile30d": 69.0,
              "movePercentileFullHistory": 66.7,
              "currentLevelPercentileFullHistory": 94.4,
              "classificationPercentile": 69.0,
              "label": "routine",
              "observations30d": 29,
              "observationsFullHistory": 33,
              "levelObservationsFullHistory": 36
            }
          },
          "nearestEligibleForwardMove": {
            "label": "23SEP26",
            "daysToExpiry": 2.646,
            "current": 2620.86,
            "previous": 2649.67,
            "change": -28.81,
            "percentChange": -1.09
          }
        },
        "tenors": [
          {
            "tenor": "1W",
            "targetExpiry": 1790526600574,
            "availability": "available",
            "unavailableReason": null,
            "atmIv": {
              "current": 48.08,
              "previous": 48.42,
              "change": -0.34,
              "percentChange": -0.7
            },
            "rr25": {
              "current": 0.82,
              "previous": 2.81,
              "change": -1.99,
              "percentChange": -70.82
            },
            "bf25": {
              "current": 2.9,
              "previous": 2.93,
              "change": -0.03,
              "percentChange": -1.02
            },
            "historicalSignificance": {
              "atmIv": {
                "absoluteMove": 0.34,
                "movePercentile30d": 6.9,
                "movePercentileFullHistory": 9.1,
                "currentLevelPercentileFullHistory": 55.6,
                "classificationPercentile": 9.1,
                "label": "routine",
                "observations30d": 29,
                "observationsFullHistory": 33,
                "levelObservationsFullHistory": 36
              },
              "rr25": {
                "absoluteMove": 1.99,
                "movePercentile30d": 65.5,
                "movePercentileFullHistory": 66.7,
                "currentLevelPercentileFullHistory": 61.1,
                "classificationPercentile": 66.7,
                "label": "routine",
                "observations30d": 29,
                "observationsFullHistory": 33,
                "levelObservationsFullHistory": 36
              },
              "bf25": {
                "absoluteMove": 0.03,
                "movePercentile30d": 6.9,
                "movePercentileFullHistory": 9.1,
                "currentLevelPercentileFullHistory": 55.6,
                "classificationPercentile": 9.1,
                "label": "routine",
                "observations30d": 29,
                "observationsFullHistory": 33,
                "levelObservationsFullHistory": 36
              }
            }
          },
          {
            "tenor": "2W",
            "targetExpiry": 1791131400574,
            "availability": "available",
            "unavailableReason": null,
            "atmIv": {
              "current": 47.36,
              "previous": 47.92,
              "change": -0.56,
              "percentChange": -1.17
            },
            "rr25": {
              "current": 1.38,
              "previous": 3.24,
              "change": -1.86,
              "percentChange": -57.41
            },
            "bf25": {
              "current": 3.06,
              "previous": 3.22,
              "change": -0.16,
              "percentChange": -4.97
            },
            "historicalSignificance": {
              "atmIv": {
                "absoluteMove": 0.56,
                "movePercentile30d": 17.2,
                "movePercentileFullHistory": 24.2,
                "currentLevelPercentileFullHistory": 19.4,
                "classificationPercentile": 24.2,
                "label": "routine",
                "observations30d": 29,
                "observationsFullHistory": 33,
                "levelObservationsFullHistory": 36
              },
              "rr25": {
                "absoluteMove": 1.86,
                "movePercentile30d": 72.4,
                "movePercentileFullHistory": 75.8,
                "currentLevelPercentileFullHistory": 66.7,
                "classificationPercentile": 75.8,
                "label": "notable",
                "observations30d": 29,
                "observationsFullHistory": 33,
                "levelObservationsFullHistory": 36
              },
              "bf25": {
                "absoluteMove": 0.16,
                "movePercentile30d": 20.7,
                "movePercentileFullHistory": 21.2,
                "currentLevelPercentileFullHistory": 72.2,
                "classificationPercentile": 21.2,
                "label": "routine",
                "observations30d": 29,
                "observationsFullHistory": 33,
                "levelObservationsFullHistory": 36
              }
            }
          },
          {
            "tenor": "1M",
            "targetExpiry": 1792513800574,
            "availability": "available",
            "unavailableReason": null,
            "atmIv": {
              "current": 48.48,
              "previous": 48.58,
              "change": -0.1,
              "percentChange": -0.21
            },
            "rr25": {
              "current": 0.85,
              "previous": 1.96,
              "change": -1.11,
              "percentChange": -56.63
            },
            "bf25": {
              "current": 2.85,
              "previous": 2.92,
              "change": -0.07,
              "percentChange": -2.4
            },
            "historicalSignificance": {
              "atmIv": {
                "absoluteMove": 0.1,
                "movePercentile30d": 6.9,
                "movePercentileFullHistory": 9.1,
                "currentLevelPercentileFullHistory": 8.3,
                "classificationPercentile": 9.1,
                "label": "routine",
                "observations30d": 29,
                "observationsFullHistory": 33,
                "levelObservationsFullHistory": 36
              },
              "rr25": {
                "absoluteMove": 1.11,
                "movePercentile30d": 69.0,
                "movePercentileFullHistory": 72.7,
                "currentLevelPercentileFullHistory": 61.1,
                "classificationPercentile": 72.7,
                "label": "notable",
                "observations30d": 29,
                "observationsFullHistory": 33,
                "levelObservationsFullHistory": 36
              },
              "bf25": {
                "absoluteMove": 0.07,
                "movePercentile30d": 24.1,
                "movePercentileFullHistory": 27.3,
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          {
            "type": "rr25",
            "title": "Largest standard-tenor RR25 move",
            "label": "1W",
            "value": -1.99,
            "score": 1.99,
            "unit": "volatility points"
          },
          {
            "type": "atmIv",
            "title": "Largest standard-tenor ATM IV move",
            "label": "2W",
            "value": -0.56,
            "score": 0.56,
            "unit": "volatility points"
          },
          {
            "type": "sigma",
            "title": "Largest eligible SVI sigma move",
            "label": "23SEP26",
            "value": 0.1864,
            "score": 0.1864,
            "unit": "parameter units"
          },
          {
            "type": "bf25",
            "title": "Largest standard-tenor BF25 move",
            "label": "6M",
            "value": 0.17,
            "score": 0.17,
            "unit": "volatility points"
          },
          {
            "type": "rho",
            "title": "Largest eligible SVI rho move",
            "label": "30OCT26",
            "value": 0.0987,
            "score": 0.0987,
            "unit": "parameter units"
          }
        ],
        "expiryEffects": [
          {
            "label": "22SEP26",
            "daysToExpiry": 1.646,
            "metric": "Smile rotation",
            "value": -12.596,
            "unit": "volatility points",
            "context": "Excluded from headline rankings because the contract has fewer than the configured full days to expiry."
          },
          {
            "label": "21SEP26",
            "daysToExpiry": 0.646,
            "metric": "ATM IV change",
            "value": 10.82,
            "unit": "volatility points",
            "context": "Excluded from headline rankings because the contract has fewer than the configured full days to expiry."
          }
        ],
        "ultraShortThresholdDays": 2.0,
        "greekCharacteristics": {
          "highestVega": {
            "label": "25JUN27",
            "expiry": 1813910400000,
            "value": 9.12841391,
            "metric": "vega",
            "availability": "available"
          },
          "highestGamma": {
            "label": "21SEP26",
            "expiry": 1789977600000,
            "value": 0.008228045077,
            "metric": "gamma",
            "availability": "available"
          },
          "highestThetaDecay": {
            "label": "21SEP26",
            "expiry": 1789977600000,
            "value": -14.97381764,
            "metric": "theta",
            "availability": "available"
          },
          "highestVanna": {
            "label": "25JUN27",
            "expiry": 1813910400000,
            "value": 0.00168979,
            "metric": "vanna",
            "availability": "available"
          },
          "highestVolga": {
            "label": "25JUN27",
            "expiry": 1813910400000,
            "value": -0.96066682,
            "metric": "volga",
            "availability": "available"
          }
        },
        "heatmap": {
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          "rows": [
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              "label": "22SEP26",
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              "label": "25SEP26",
              "values": [
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            {
              "label": "2OCT26",
              "values": [
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              "label": "9OCT26",
              "values": [
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            {
              "label": "30OCT26",
              "values": [
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              "label": "27NOV26",
              "values": [
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            },
            {
              "label": "25DEC26",
              "values": [
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            },
            {
              "label": "26MAR27",
              "values": [
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            },
            {
              "label": "25JUN27",
              "values": [
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        },
        "marketDiary": {
          "schemaVersion": 1,
          "source": "local-news-mcp",
          "generatedAt": "2026-09-20T16:30:00+00:00",
          "window": {
            "startAt": "2026-09-19T16:30:00+00:00",
            "endAt": "2026-09-20T16:30:00+00:00",
            "endExclusive": true
          },
          "headline": "Ether options lose call premium as one-week skew narrows sharply",
          "standfirst": "Ether one-week RR25 fell 1.99 volatility points to 0.82% at the 16:30 UTC cutoff, sharply narrowing call-side volatility’s premium over put-side volatility without reversing it. Ether two-week ATM IV fell 0.56 points to 47.36%, and Ether’s 24-hour spot-index return was -1.03%. Derivasys data show Ether one-week ATM IV at 48.08%, 4.32 points below seven-day realised volatility of 52.40%.",
          "days": [
            {
              "reportDate": "2026-09-20",
              "headline": "Ether call premium narrows sharply",
              "summary": "Ether one-week RR25 moved toward puts while front-end implied volatility eased across short maturities.",
              "macro": {
                "summary": "No qualifying macro context was retained.",
                "events": []
              },
              "crypto": {
                "summary": "The Block reported Bitcoin ETF inflows and said Ether funds ended a four-week inflow streak.",
                "events": [
                  {
                    "eventId": "778fac37-92fe-4da0-b881-d566c653f62a",
                    "title": "Bitcoin ETFs eke out positive week with $433 million Friday inflow as ether funds snap four-week inflow streak",
                    "publisher": "The Block",
                    "url": "https://www.theblock.co/news/markets/2026-09-19-bitcoin-etfs-eke-out-positive-week-with-433-million-friday-inflow-as-ether-funds-snap-four-week-inflow-streak-415871",
                    "publishedAt": "2026-09-19T18:01:09+00:00"
                  }
                ]
              }
            }
          ]
        },
        "newsStatus": "context",
        "headline": "Ether options lose call premium as one-week skew narrows sharply",
        "standfirst": "Ether one-week RR25 fell 1.99 volatility points to 0.82% at the 16:30 UTC cutoff, sharply narrowing call-side volatility’s premium over put-side volatility without reversing it. Ether two-week ATM IV fell 0.56 points to 47.36%, and Ether’s 24-hour spot-index return was -1.03%. Derivasys data show Ether one-week ATM IV at 48.08%, 4.32 points below seven-day realised volatility of 52.40%.",
        "crossAssetMarketContext": {
          "schemaVersion": 1,
          "source": "market-context-mcp",
          "status": "available",
          "asset": "ETH",
          "sessionDate": "2026-09-18",
          "asOfTimestamp": "2026-09-18T20:00:00+00:00",
          "summary": "Previous session (latest completed): Persisted common-session context returned for the 2026-09-18 US close; requested as_of was 2026-09-20T16:30:00+00:00. The crypto-minus-SPX realised-volatility spread was 41.25 points, at the 37.2 percentile across 234 prior observations.",
          "regimeInsights": [
            "The crypto-minus-SPX realised-volatility spread was 41.25 points, at the 37.2 percentile across 234 prior observations."
          ],
          "metrics": {
            "cryptoAtmIv30d": 48.5,
            "vix": 14.8100004196167,
            "vix9d": 12.270000457763672,
            "vix3m": 18.239999771118164,
            "ivSpread": 33.6899995803833,
            "ivRatio": 3.274814221865852,
            "cryptoRealisedVol20d": 50.629902701660036,
            "spxRealisedVol20": 9.376313403524426,
            "rvSpread": 41.25358929813561,
            "rvRatio": 5.399766467130776,
            "rvSpreadPercentile": 37.17948717948718,
            "rvSpreadPercentileSampleCount": 234,
            "rvRatioPercentile": 56.41025641025641,
            "rvRatioPercentileSampleCount": 234,
            "returnCorrelation30": 0.19609110519225115,
            "returnCorrelation30SampleCount": 30,
            "returnCorrelation60": 0.2305227070319435,
            "returnCorrelation60SampleCount": 60
          },
          "methodology": "Derivasys cross-asset metrics at 2026-09-18T20:00:00Z; crypto RV annualizes with sqrt(365), SPX RV with sqrt(252)."
        }
      },
      "oneWeek": {
        "tenor": "1W",
        "targetExpiry": 1790526600574,
        "availability": "available",
        "unavailableReason": null,
        "atmIv": {
          "current": 48.08,
          "previous": 48.42,
          "change": -0.34,
          "percentChange": -0.7
        },
        "rr25": {
          "current": 0.82,
          "previous": 2.81,
          "change": -1.99,
          "percentChange": -70.82
        },
        "bf25": {
          "current": 2.9,
          "previous": 2.93,
          "change": -0.03,
          "percentChange": -1.02
        },
        "historicalSignificance": {
          "atmIv": {
            "absoluteMove": 0.34,
            "movePercentile30d": 6.9,
            "movePercentileFullHistory": 9.1,
            "currentLevelPercentileFullHistory": 55.6,
            "classificationPercentile": 9.1,
            "label": "routine",
            "observations30d": 29,
            "observationsFullHistory": 33,
            "levelObservationsFullHistory": 36
          },
          "rr25": {
            "absoluteMove": 1.99,
            "movePercentile30d": 65.5,
            "movePercentileFullHistory": 66.7,
            "currentLevelPercentileFullHistory": 61.1,
            "classificationPercentile": 66.7,
            "label": "routine",
            "observations30d": 29,
            "observationsFullHistory": 33,
            "levelObservationsFullHistory": 36
          },
          "bf25": {
            "absoluteMove": 0.03,
            "movePercentile30d": 6.9,
            "movePercentileFullHistory": 9.1,
            "currentLevelPercentileFullHistory": 55.6,
            "classificationPercentile": 9.1,
            "label": "routine",
            "observations30d": 29,
            "observationsFullHistory": 33,
            "levelObservationsFullHistory": 36
          }
        }
      }
    },
    {
      "asset": "SOL",
      "report": {
        "schemaVersion": 3,
        "reportDate": "2026-09-20",
        "generatedAt": "2026-09-20T16:31:45+00:00",
        "currentSnapshotAt": "2026-09-20T16:30:00+00:00",
        "previousSnapshotAt": "2026-09-19T16:30:00+00:00",
        "sourceSnapshots": {
          "current": {
            "id": 426868,
            "timestamp": "2026-09-20T16:30:00+00:00"
          },
          "previous": {
            "id": 416836,
            "timestamp": "2026-09-19T16:30:00+00:00"
          }
        },
        "windowHours": 24.0,
        "currency": "SOL",
        "methodology": {
          "source": "Derivasys proprietary historical SVI surface database",
          "comparison": "Nearest successful surface snapshots approximately 24 hours apart",
          "rrConvention": "25-delta call IV minus 25-delta put IV",
          "bfConvention": "Average 25-delta wing IV minus ATM forward IV",
          "greeks": "Black forward Greeks for a normalized one-SOL ATM-forward call, zero rate, fitted SVI IV",
          "commentary": "Metrics and takeaways are deterministic. Daily headlines and introductions may be model-assisted, constrained to the same stored facts; weekly prose is deterministic.",
          "fixedTenors": "Fixed-tenor measures are published only when listed expiries bracket the target at both comparison snapshots. Targets outside either observable range are suppressed, not extrapolated; headline rankings use only supported tenors.",
          "smileReconstruction": "Listed-expiry smiles are reconstructed from stored SVI total-variance parameters on a fixed log-moneyness grid.",
          "ultraShortExpiry": "Expiries with fewer than 2 full days remaining stay in detailed tables but are excluded from headline rankings. Settlement proximity, time decay, changing liquidity and fewer quotes can exaggerate their changes.",
          "causalClaims": "The report describes observed surface changes only and does not infer unsupported market drivers, spot moves, flows or forecasts."
        },
        "realisedVolatilityUnavailableReason": "Canonical SOL index coverage for 7d is incomplete: expected 10080 one-minute returns, found 10042 (99.6230% coverage); returns spanning missing minutes are excluded",
        "fitQuality": {
          "currentObjective": 0.0227697,
          "previousObjective": 0.0248143,
          "currentLiveError": 16.14788082,
          "previousLiveError": 14.12158999
        },
        "coverage": {
          "currentListedExpiries": 6,
          "previousListedExpiries": 6,
          "comparedListedExpiries": 5,
          "addedExpiries": [
            "22SEP26"
          ],
          "removedExpiries": [
            "20SEP26"
          ],
          "fixedTenors": [
            "1W",
            "2W",
            "1M",
            "3M"
          ],
          "suppressedFixedTenors": [
            "6M",
            "9M",
            "1Y"
          ]
        },
        "commentary": {
          "source": "codex",
          "model": "gpt-5.6-terra",
          "headline": "Solana options add three-month convexity premium",
          "executiveSummary": "Solana three-month BF25 rose 0.88 volatility points to 5.36%, the most notable surface adjustment at the cutoff. Front-end ATM IV also increased, led by a 2.00-point rise in one-week ATM IV to 55.38%.",
          "evidenceIds": [
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          "newsSummary": "No qualifying Solana-specific news context was retained.",
          "marketContextSummary": "No retained news item provides a market-context assessment for Solana’s options repricing.",
          "marketContext": [],
          "newsEvidenceIds": [],
          "takeaways": [
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            },
            {
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              "label": "Long end",
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            },
            {
              "id": "rr25",
              "label": "Skew",
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            },
            {
              "id": "bf25",
              "label": "Convexity",
              "text": "BF25 increased, averaging +0.41 volatility points to 4.54% across the six headline tenors."
            },
            {
              "id": "largest-standard-tenor",
              "label": "Largest standard-tenor move",
              "text": "The largest standard-tenor ATM IV move was +2.00 volatility points at 1W, to 55.38%.",
              "tenor": "1W",
              "value": 2.0
            }
          ]
        },
        "newsEvidence": {
          "schemaVersion": 1,
          "source": "local-news-mcp",
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            "basis": "monitored-source-search",
            "status": "complete",
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            "missingScopes": [],
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                  "min_importance": 0,
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                  "statuses": [
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                },
                "complete": true,
                "pages": [
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                ]
              }
            ],
            "upstreamIngestionHealth": "not-exposed"
          },
          "generatedAt": "2026-09-20T16:30:00+00:00",
          "window": {
            "startAt": "2026-09-19T16:30:00+00:00",
            "endAt": "2026-09-20T16:30:00+00:00",
            "endExclusive": true
          },
          "coverage": {
            "configuredSources": 1,
            "successfulSources": 1,
            "failedSources": 0
          },
          "provenance": {
            "collectionArchitecture": "central-canonical-event-store",
            "mcpServersQueried": 1,
            "assetScopedQueries": 2,
            "macroQueries": 6,
            "canonicalEventsConsidered": 0,
            "publishersRepresented": 0,
            "discoveryEventsScanned": 238,
            "upstreamFeedCount": null,
            "coverageNote": "The local news MCP exposes canonical events, not its upstream feed inventory; legacy feed-count fields below describe the single MCP endpoint and are not comparable with the former RSS collector."
          },
          "selection": {
            "feedsQueried": 1,
            "publishersQueried": 0,
            "feedEntriesScanned": 1,
            "articlesPassingTimeFilter": 1,
            "articlesPassingSourceRelevanceRules": 0,
            "articlesPassingSelectionThreshold": 0,
            "storiesSelected": 0,
            "selectedPublishers": 0,
            "maximumStories": 3,
            "maximumStoriesPerPublisher": 2,
            "minimumSelectionScore": 0,
            "lockedEventSet": true,
            "qualityThresholds": {
              "minimumConfidence": null,
              "minimumImportance": null,
              "minimumSourceQuality": 0.58,
              "minimumCatalystScore": null,
              "minimumMediaReliability": 0.6
            },
            "candidateAudit": [
              {
                "eventId": "778fac37-92fe-4da0-b881-d566c653f62a",
                "selected": false,
                "eligible": false,
                "checks": {
                  "verifiedSourceMetadata": true,
                  "contentKind": true,
                  "status": true
                },
                "inWindow": true,
                "reportRelevant": false,
                "decision": "ineligible"
              },
              {
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                "selected": false,
                "eligible": false,
                "checks": {
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                  "contentKind": true,
                  "status": true
                },
                "inWindow": false,
                "reportRelevant": true,
                "decision": "ineligible"
              }
            ],
            "planRationale": "No in-window item met both explicit SOL relevance and context suitability. The Solana Foundation source was reviewed but is a routine promotional/interview-format crypto-security item tagged crypto_general, not a sufficiently relevant SOL-specific context item.",
            "eventsSelected": 0
          },
          "items": [],
          "events": []
        },
        "newsContext": {
          "outcome": "No sufficiently relevant context identified",
          "highest_causal_confidence": "low",
          "section_heading": "No sufficiently relevant context identified",
          "events": [],
          "coverage_status": "healthy",
          "coverage_basis": "monitored-source-search",
          "summary": "No qualifying context was found in the monitored news sources for this reporting window."
        },
        "marketRead": {
          "text": "1W ATM IV rose 2.00 volatility points to 55.38%, a routine move at the 48th percentile among 23 comparable historical observations. Front-end ATM IV averaged 54.21%, +1.26 points from the prior snapshot. Long-dated fixed tenors were suppressed because listed expiries did not bracket them. 1W RR25 moved 0.75 volatility points toward puts to 1.04%, leaving calls richer than puts. 3M BF25 rose 0.88 volatility points to 5.36%. The nearest eligible forward, 25SEP26, fell $2.26 (-2.02%) to $109.41. No sufficiently relevant context identified; the strongest assessed relationship has low causal confidence.",
          "wordCount": 90,
          "source": "deterministic structured report facts",
          "evidenceFields": [
            "summaryMetrics.largestAtmMove",
            "summaryMetrics.frontEndAverageAtm",
            "summaryMetrics.largestRr25Move",
            "summaryMetrics.largestBf25Move",
            "summaryMetrics.nearestEligibleForwardMove",
            "newsContext.outcome",
            "newsContext.highest_causal_confidence"
          ]
        },
        "facts": [
          {
            "id": "front-atm",
            "label": "Front end",
            "text": "Front-end ATM IV increased, averaging +1.26 volatility points to 54.21% across 1W, 2W and 1M."
          },
          {
            "id": "back-atm",
            "label": "Long end",
            "text": "Long-dated ATM IV is unavailable because comparable observations were not present at both snapshots."
          },
          {
            "id": "rr25",
            "label": "Skew",
            "text": "RR25 moved towards puts, averaging -0.45 volatility points to 1.82% across the six headline tenors."
          },
          {
            "id": "bf25",
            "label": "Convexity",
            "text": "BF25 increased, averaging +0.41 volatility points to 4.54% across the six headline tenors."
          },
          {
            "id": "largest-standard-tenor",
            "label": "Largest standard-tenor move",
            "text": "The largest standard-tenor ATM IV move was +2.00 volatility points at 1W, to 55.38%.",
            "tenor": "1W",
            "value": 2.0
          }
        ],
        "summaryMetrics": {
          "basis": "Fixed-tenor endpoint comparison",
          "unit": "volatility points",
          "atmIvChange": 1.02,
          "rr25Change": -0.45,
          "bf25Change": 0.41,
          "largestAtmMove": {
            "tenor": "1W",
            "current": 55.38,
            "previous": 53.38,
            "change": 2.0,
            "historicalSignificance": {
              "absoluteMove": 2.0,
              "movePercentile30d": 47.8,
              "movePercentileFullHistory": 47.8,
              "currentLevelPercentileFullHistory": 75.0,
              "classificationPercentile": 47.8,
              "label": "routine",
              "observations30d": 23,
              "observationsFullHistory": 23,
              "levelObservationsFullHistory": 24
            }
          },
          "frontEndAverageAtm": {
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            "previous": 52.95,
            "change": 1.26
          },
          "longEndAverageAtm": {
            "current": null,
            "previous": null,
            "change": null
          },
          "oneYearMinusOneWeekAtmSlope": {
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            "previous": null,
            "change": null
          },
          "largestRr25Move": {
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            "current": 1.04,
            "previous": 1.79,
            "change": -0.75,
            "historicalSignificance": {
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              "movePercentile30d": 26.1,
              "movePercentileFullHistory": 26.1,
              "currentLevelPercentileFullHistory": 37.5,
              "classificationPercentile": 26.1,
              "label": "routine",
              "observations30d": 23,
              "observationsFullHistory": 23,
              "levelObservationsFullHistory": 24
            },
            "direction": "toward puts",
            "currentSign": "call-rich"
          },
          "largestBf25Move": {
            "tenor": "3M",
            "current": 5.36,
            "previous": 4.48,
            "change": 0.88,
            "historicalSignificance": {
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              "movePercentile30d": 87.0,
              "movePercentileFullHistory": 87.0,
              "currentLevelPercentileFullHistory": 70.8,
              "classificationPercentile": 87.0,
              "label": "notable",
              "observations30d": 23,
              "observationsFullHistory": 23,
              "levelObservationsFullHistory": 24
            }
          },
          "nearestEligibleForwardMove": {
            "label": "25SEP26",
            "daysToExpiry": 4.646,
            "current": 109.41,
            "previous": 111.67,
            "change": -2.26,
            "percentChange": -2.02
          }
        },
        "tenors": [
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            "unavailableReason": null,
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              "percentChange": 3.75
            },
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              "change": -0.75,
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            },
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              "percentChange": 9.82
            },
            "historicalSignificance": {
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                "movePercentile30d": 26.1,
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              },
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                "observationsFullHistory": 23,
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              }
            }
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            },
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              "change": -0.57,
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            },
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            },
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                "label": "routine",
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                "observationsFullHistory": 23,
                "levelObservationsFullHistory": 24
              },
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                "movePercentile30d": 13.0,
                "movePercentileFullHistory": 13.0,
                "currentLevelPercentileFullHistory": 37.5,
                "classificationPercentile": 13.0,
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                "observationsFullHistory": 23,
                "levelObservationsFullHistory": 24
              },
              "bf25": {
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                "movePercentile30d": 0.0,
                "movePercentileFullHistory": 0.0,
                "currentLevelPercentileFullHistory": 54.2,
                "classificationPercentile": 0.0,
                "label": "routine",
                "observations30d": 23,
                "observationsFullHistory": 23,
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              }
            }
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            "unavailableReason": null,
            "atmIv": {
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            },
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              "change": -0.52,
              "percentChange": -20.55
            },
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            },
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                "movePercentile30d": 26.1,
                "movePercentileFullHistory": 26.1,
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                "classificationPercentile": 26.1,
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              },
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                "movePercentileFullHistory": 21.7,
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                "classificationPercentile": 21.7,
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                "movePercentileFullHistory": 69.6,
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            "unavailableReason": null,
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              "change": 0.31,
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              "percentChange": 1.4
            },
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                "movePercentileFullHistory": 4.3,
                "currentLevelPercentileFullHistory": 50.0,
                "classificationPercentile": 4.3,
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                "classificationPercentile": 87.0,
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                "observationsFullHistory": 23,
                "levelObservationsFullHistory": 24
              }
            }
          },
          {
            "tenor": "6M",
            "targetExpiry": 1805646601191,
            "availability": "unavailable",
            "unavailableReason": "The target tenor falls outside the listed-expiry range at one or both snapshots; extrapolated values are suppressed.",
            "atmIv": {
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              "previous": null,
              "change": null,
              "percentChange": null
            },
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                "movePercentile30d": null,
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                "currentLevelPercentileFullHistory": null,
                "classificationPercentile": null,
                "label": "unavailable",
                "observations30d": 0,
                "observationsFullHistory": 0,
                "levelObservationsFullHistory": 0
              },
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        "events": [
          {
            "type": "rotation",
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            "value": -3.797,
            "score": 3.797,
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          },
          {
            "type": "atmIv",
            "title": "Largest standard-tenor ATM IV move",
            "label": "1W",
            "value": 2.0,
            "score": 2.0,
            "unit": "volatility points"
          },
          {
            "type": "bf25",
            "title": "Largest standard-tenor BF25 move",
            "label": "3M",
            "value": 0.88,
            "score": 0.88,
            "unit": "volatility points"
          },
          {
            "type": "rr25",
            "title": "Largest standard-tenor RR25 move",
            "label": "1W",
            "value": -0.75,
            "score": 0.75,
            "unit": "volatility points"
          },
          {
            "type": "sigma",
            "title": "Largest eligible SVI sigma move",
            "label": "25DEC26",
            "value": -0.2654,
            "score": 0.2654,
            "unit": "parameter units"
          },
          {
            "type": "rho",
            "title": "Largest eligible SVI rho move",
            "label": "25SEP26",
            "value": -0.1465,
            "score": 0.1465,
            "unit": "parameter units"
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        ],
        "expiryEffects": [
          {
            "label": "21SEP26",
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            "value": -27.422,
            "unit": "volatility points",
            "context": "Excluded from headline rankings because the contract has fewer than the configured full days to expiry."
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        ],
        "ultraShortThresholdDays": 2.0,
        "greekCharacteristics": {
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          "highestGamma": {
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          "highestThetaDecay": {
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            "availability": "available"
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          "highestVanna": {
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            "availability": "available"
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          "highestVolga": {
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            {
              "label": "30OCT26",
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            {
              "label": "25DEC26",
              "values": [
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        },
        "marketDiary": {
          "schemaVersion": 1,
          "source": "local-news-mcp",
          "generatedAt": "2026-09-20T16:30:00+00:00",
          "window": {
            "startAt": "2026-09-19T16:30:00+00:00",
            "endAt": "2026-09-20T16:30:00+00:00",
            "endExclusive": true
          },
          "headline": "Solana options price richer convexity as front-end volatility firms",
          "standfirst": "Solana three-month BF25 rose 0.88 volatility points to 5.36% at the 16:30 UTC cutoff, a notable 87th percentile move in comparable history that lifted the premium for wings relative to at-the-money volatility. Solana one-week ATM IV also rose 2.00 points to 55.38%, while front-end ATM IV averaged 54.21%, up 1.26 points. Solana’s 24-hour spot return was unavailable in the realised-volatility comparison.",
          "days": [
            {
              "reportDate": "2026-09-20",
              "headline": "Solana convexity premium rises",
              "summary": "Solana three-month BF25 increased notably while one-week ATM implied volatility moved higher.",
              "macro": {
                "summary": "No qualifying macro context was retained.",
                "events": []
              },
              "crypto": {
                "summary": "No qualifying Solana-specific crypto news context was retained.",
                "events": []
              }
            }
          ]
        },
        "newsStatus": "no-relevant-catalyst",
        "headline": "Solana options price richer convexity as front-end volatility firms",
        "standfirst": "Solana three-month BF25 rose 0.88 volatility points to 5.36% at the 16:30 UTC cutoff, a notable 87th percentile move in comparable history that lifted the premium for wings relative to at-the-money volatility. Solana one-week ATM IV also rose 2.00 points to 55.38%, while front-end ATM IV averaged 54.21%, up 1.26 points. Solana’s 24-hour spot return was unavailable in the realised-volatility comparison.",
        "crossAssetMarketContext": {
          "schemaVersion": 1,
          "source": "market-context-mcp",
          "status": "available",
          "asset": "SOL",
          "sessionDate": "2026-09-18",
          "asOfTimestamp": "2026-09-18T20:00:00+00:00",
          "summary": "Previous session (latest completed): Persisted common-session context returned for the 2026-09-18 US close; requested as_of was 2026-09-20T16:30:00+00:00. The crypto-to-SPX realised-volatility ratio was 7.56, at the 74.0 percentile across 231 prior observations. The 60-session crypto-SPX return correlation was 0.28 from 60 aligned observations.",
          "regimeInsights": [
            "The crypto-to-SPX realised-volatility ratio was 7.56, at the 74.0 percentile across 231 prior observations.",
            "The 60-session crypto-SPX return correlation was 0.28 from 60 aligned observations."
          ],
          "metrics": {
            "cryptoAtmIv30d": 54.7,
            "vix": 14.8100004196167,
            "vix9d": 12.270000457763672,
            "vix3m": 18.239999771118164,
            "ivSpread": 39.889999580383304,
            "ivRatio": 3.69345026672293,
            "cryptoRealisedVol20d": 70.89198380461573,
            "spxRealisedVol20": 9.376313403524426,
            "rvSpread": 61.515670401091306,
            "rvRatio": 7.560752371819016,
            "rvSpreadPercentile": 47.18614718614719,
            "rvSpreadPercentileSampleCount": 231,
            "rvRatioPercentile": 74.02597402597402,
            "rvRatioPercentileSampleCount": 231,
            "returnCorrelation30": 0.39052830588581033,
            "returnCorrelation30SampleCount": 30,
            "returnCorrelation60": 0.2819583453579083,
            "returnCorrelation60SampleCount": 60
          },
          "methodology": "Derivasys cross-asset metrics at 2026-09-18T20:00:00Z; crypto RV annualizes with sqrt(365), SPX RV with sqrt(252)."
        }
      },
      "oneWeek": {
        "tenor": "1W",
        "targetExpiry": 1790526601191,
        "availability": "available",
        "unavailableReason": null,
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          "change": 2.0,
          "percentChange": 3.75
        },
        "rr25": {
          "current": 1.04,
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          "percentChange": -41.9
        },
        "bf25": {
          "current": 4.36,
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          "change": 0.39,
          "percentChange": 9.82
        },
        "historicalSignificance": {
          "atmIv": {
            "absoluteMove": 2.0,
            "movePercentile30d": 47.8,
            "movePercentileFullHistory": 47.8,
            "currentLevelPercentileFullHistory": 75.0,
            "classificationPercentile": 47.8,
            "label": "routine",
            "observations30d": 23,
            "observationsFullHistory": 23,
            "levelObservationsFullHistory": 24
          },
          "rr25": {
            "absoluteMove": 0.75,
            "movePercentile30d": 26.1,
            "movePercentileFullHistory": 26.1,
            "currentLevelPercentileFullHistory": 37.5,
            "classificationPercentile": 26.1,
            "label": "routine",
            "observations30d": 23,
            "observationsFullHistory": 23,
            "levelObservationsFullHistory": 24
          },
          "bf25": {
            "absoluteMove": 0.39,
            "movePercentile30d": 47.8,
            "movePercentileFullHistory": 47.8,
            "currentLevelPercentileFullHistory": 58.3,
            "classificationPercentile": 47.8,
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            "observationsFullHistory": 23,
            "levelObservationsFullHistory": 24
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        }
      }
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  ],
  "crossAssetAnalysis": {
    "schemaVersion": 1,
    "purpose": "Explain what is happening between BTC, ETH and SOL, not recap the component reports.",
    "returnMetric": {
      "key": "spotPerformance24h",
      "source": "spotMove24hPercent",
      "label": "24h spot-index return",
      "unit": "percent"
    },
    "assets": [
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      "ETH",
      "SOL"
    ],
    "comparableAssets": [
      "BTC",
      "ETH",
      "SOL"
    ],
    "oneWeek": {
      "atmIvLevel": {
        "leader": "SOL",
        "laggard": "BTC",
        "highest": 55.38,
        "lowest": 33.98,
        "spread": 21.4,
        "highestToLowestRatio": 1.6298,
        "largestAbsoluteMoveAsset": "SOL",
        "largestAbsoluteMoveValue": 55.38,
        "values": [
          {
            "asset": "BTC",
            "value": 33.98
          },
          {
            "asset": "ETH",
            "value": 48.08
          },
          {
            "asset": "SOL",
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        ],
        "previousSpread": 19.1,
        "spreadChange": 2.3,
        "dispersionDirection": "widening"
      },
      "atmIvChange": {
        "leader": "SOL",
        "laggard": "ETH",
        "highest": 2.0,
        "lowest": -0.34,
        "spread": 2.34,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": "SOL",
        "largestAbsoluteMoveValue": 2.0,
        "values": [
          {
            "asset": "BTC",
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          },
          {
            "asset": "ETH",
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          },
          {
            "asset": "SOL",
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          }
        ]
      },
      "rr25Level": {
        "leader": "SOL",
        "laggard": "BTC",
        "highest": 1.04,
        "lowest": -0.11,
        "spread": 1.15,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": "SOL",
        "largestAbsoluteMoveValue": 1.04,
        "values": [
          {
            "asset": "BTC",
            "value": -0.11
          },
          {
            "asset": "ETH",
            "value": 0.82
          },
          {
            "asset": "SOL",
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        ],
        "previousSpread": 1.84,
        "spreadChange": -0.69,
        "dispersionDirection": "compressing"
      },
      "rr25Change": {
        "leader": "SOL",
        "laggard": "ETH",
        "highest": -0.75,
        "lowest": -1.99,
        "spread": 1.24,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": "ETH",
        "largestAbsoluteMoveValue": -1.99,
        "values": [
          {
            "asset": "BTC",
            "value": -1.08
          },
          {
            "asset": "ETH",
            "value": -1.99
          },
          {
            "asset": "SOL",
            "value": -0.75
          }
        ]
      }
    },
    "relativeVolatilityLeader": {
      "asset": "SOL",
      "metric": "absolute 1W ATM IV change",
      "value": 2.0
    },
    "termStructure": {
      "definition": "1Y minus 1W ATM IV, in volatility points",
      "currentSlope": {
        "leader": null,
        "laggard": null,
        "highest": null,
        "lowest": null,
        "spread": null,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": null,
        "largestAbsoluteMoveValue": null,
        "values": [
          {
            "asset": "BTC",
            "value": null
          },
          {
            "asset": "ETH",
            "value": null
          },
          {
            "asset": "SOL",
            "value": null
          }
        ],
        "previousSpread": null,
        "spreadChange": null,
        "dispersionDirection": "unavailable"
      },
      "slopeChange": {
        "leader": null,
        "laggard": null,
        "highest": null,
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        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": null,
        "largestAbsoluteMoveValue": null,
        "values": [
          {
            "asset": "BTC",
            "value": null
          },
          {
            "asset": "ETH",
            "value": null
          },
          {
            "asset": "SOL",
            "value": null
          }
        ]
      }
    },
    "relativeValue": {
      "ivMinusRealised7d": {
        "leader": "BTC",
        "laggard": "ETH",
        "highest": -3.14,
        "lowest": -4.32,
        "spread": 1.18,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": "ETH",
        "largestAbsoluteMoveValue": -4.32,
        "values": [
          {
            "asset": "BTC",
            "value": -3.14
          },
          {
            "asset": "ETH",
            "value": -4.32
          },
          {
            "asset": "SOL",
            "value": null
          }
        ]
      },
      "spotPerformance24h": {
        "leader": "BTC",
        "laggard": "ETH",
        "highest": -0.83,
        "lowest": -1.03,
        "spread": 0.2,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": "ETH",
        "largestAbsoluteMoveValue": -1.03,
        "values": [
          {
            "asset": "BTC",
            "value": -0.83
          },
          {
            "asset": "ETH",
            "value": -1.03
          },
          {
            "asset": "SOL",
            "value": null
          }
        ]
      }
    },
    "rankings": {
      "oneWeekAtmIvLevel": [
        {
          "rank": 1,
          "asset": "SOL",
          "value": 55.38,
          "previousRank": 1,
          "rankChange": 0
        },
        {
          "rank": 2,
          "asset": "ETH",
          "value": 48.08,
          "previousRank": 2,
          "rankChange": 0
        },
        {
          "rank": 3,
          "asset": "BTC",
          "value": 33.98,
          "previousRank": 3,
          "rankChange": 0
        }
      ],
      "oneWeekAtmIvChange": [
        {
          "rank": 1,
          "asset": "SOL",
          "value": 2.0,
          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": 2,
          "asset": "BTC",
          "value": -0.3,
          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": 3,
          "asset": "ETH",
          "value": -0.34,
          "previousRank": null,
          "rankChange": null
        }
      ],
      "oneWeekAtmIvAbsoluteMove": [
        {
          "rank": 1,
          "asset": "SOL",
          "value": 2.0,
          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": 2,
          "asset": "ETH",
          "value": -0.34,
          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": 3,
          "asset": "BTC",
          "value": -0.3,
          "previousRank": null,
          "rankChange": null
        }
      ],
      "ivMinusRealised7d": [
        {
          "rank": 1,
          "asset": "BTC",
          "value": -3.14,
          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": 2,
          "asset": "ETH",
          "value": -4.32,
          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": null,
          "asset": "SOL",
          "value": null,
          "previousRank": null,
          "rankChange": null
        }
      ],
      "oneWeekRr25CallRichness": [
        {
          "rank": 1,
          "asset": "SOL",
          "value": 1.04,
          "previousRank": 2,
          "rankChange": 1
        },
        {
          "rank": 2,
          "asset": "ETH",
          "value": 0.82,
          "previousRank": 1,
          "rankChange": -1
        },
        {
          "rank": 3,
          "asset": "BTC",
          "value": -0.11,
          "previousRank": 3,
          "rankChange": 0
        }
      ],
      "oneWeekRr25PutRichness": [
        {
          "rank": 1,
          "asset": "BTC",
          "value": -0.11,
          "previousRank": 1,
          "rankChange": 0
        },
        {
          "rank": 2,
          "asset": "ETH",
          "value": 0.82,
          "previousRank": 3,
          "rankChange": 1
        },
        {
          "rank": 3,
          "asset": "SOL",
          "value": 1.04,
          "previousRank": 2,
          "rankChange": -1
        }
      ],
      "termStructureSlope": [
        {
          "rank": null,
          "asset": "BTC",
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          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": null,
          "asset": "ETH",
          "value": null,
          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": null,
          "asset": "SOL",
          "value": null,
          "previousRank": null,
          "rankChange": null
        }
      ],
      "termStructureSlopeChange": [
        {
          "rank": null,
          "asset": "BTC",
          "value": null,
          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": null,
          "asset": "ETH",
          "value": null,
          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": null,
          "asset": "SOL",
          "value": null,
          "previousRank": null,
          "rankChange": null
        }
      ],
      "spotPerformance24h": [
        {
          "rank": 1,
          "asset": "BTC",
          "value": -0.83,
          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": 2,
          "asset": "ETH",
          "value": -1.03,
          "previousRank": null,
          "rankChange": null
        },
        {
          "rank": null,
          "asset": "SOL",
          "value": null,
          "previousRank": null,
          "rankChange": null
        }
      ]
    },
    "outliers": [
      {
        "metric": "1W ATM IV change",
        "asset": "SOL",
        "value": 2.0,
        "groupMedian": -0.3,
        "distanceFromMedian": 2.3
      },
      {
        "metric": "1W ATM IV level",
        "asset": "BTC",
        "value": 33.98,
        "groupMedian": 48.08,
        "distanceFromMedian": -14.1
      },
      {
        "metric": "1W RR25 level",
        "asset": "BTC",
        "value": -0.11,
        "groupMedian": 0.82,
        "distanceFromMedian": -0.93
      }
    ],
    "relativeValueObservation": {
      "richestAsset": "BTC",
      "cheapestAsset": "ETH",
      "spread": 1.18,
      "metric": "1W ATM IV minus 7D realised volatility",
      "interpretation": "BTC screens richest and ETH cheapest on one-week implied volatility versus seven-day realised volatility, with a 1.18-point cross-sectional range."
    },
    "historicalContext": {
      "minimumObservations": 20,
      "observations": 22,
      "oneWeekAtmIvLevelDispersionPercentile": 81.8,
      "oneWeekAtmIvChangeDispersionPercentile": 36.4,
      "oneWeekRr25LevelDispersionPercentile": 22.7,
      "termStructureDispersionPercentile": null,
      "ivMinusRealisedDispersionPercentile": 40.9,
      "availabilityNote": null
    },
    "correlations": {
      "metric": "spotMove24hPercent",
      "minimumObservations": 10,
      "lookbackObservations": 30,
      "pairs": [
        {
          "assets": [
            "BTC",
            "ETH"
          ],
          "value": 0.8797,
          "observations": 23
        },
        {
          "assets": [
            "BTC",
            "SOL"
          ],
          "value": null,
          "observations": 7
        },
        {
          "assets": [
            "ETH",
            "SOL"
          ],
          "value": null,
          "observations": 7
        }
      ],
      "availabilityNote": "Pair correlations require 10 aligned prior reports."
    },
    "evidence": [
      {
        "id": "majors-cross-1w-atm-change-dispersion",
        "metric": "1W ATM IV change dispersion",
        "unit": "volatility points",
        "leader": "SOL",
        "laggard": "ETH",
        "highest": 2.0,
        "lowest": -0.34,
        "spread": 2.34,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": "SOL",
        "largestAbsoluteMoveValue": 2.0,
        "values": [
          {
            "asset": "BTC",
            "value": -0.3
          },
          {
            "asset": "ETH",
            "value": -0.34
          },
          {
            "asset": "SOL",
            "value": 2.0
          }
        ]
      },
      {
        "id": "majors-cross-1w-atm-level-dispersion",
        "metric": "1W ATM IV level dispersion",
        "unit": "volatility points",
        "leader": "SOL",
        "laggard": "BTC",
        "highest": 55.38,
        "lowest": 33.98,
        "spread": 21.4,
        "highestToLowestRatio": 1.6298,
        "largestAbsoluteMoveAsset": "SOL",
        "largestAbsoluteMoveValue": 55.38,
        "values": [
          {
            "asset": "BTC",
            "value": 33.98
          },
          {
            "asset": "ETH",
            "value": 48.08
          },
          {
            "asset": "SOL",
            "value": 55.38
          }
        ],
        "previousSpread": 19.1,
        "spreadChange": 2.3,
        "dispersionDirection": "widening"
      },
      {
        "id": "majors-cross-1w-rr25-dispersion",
        "metric": "1W RR25 level dispersion",
        "unit": "volatility points",
        "leader": "SOL",
        "laggard": "BTC",
        "highest": 1.04,
        "lowest": -0.11,
        "spread": 1.15,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": "SOL",
        "largestAbsoluteMoveValue": 1.04,
        "values": [
          {
            "asset": "BTC",
            "value": -0.11
          },
          {
            "asset": "ETH",
            "value": 0.82
          },
          {
            "asset": "SOL",
            "value": 1.04
          }
        ],
        "previousSpread": 1.84,
        "spreadChange": -0.69,
        "dispersionDirection": "compressing"
      },
      {
        "id": "majors-cross-term-structure-divergence",
        "metric": "1Y minus 1W ATM IV slope dispersion",
        "unit": "volatility points",
        "leader": null,
        "laggard": null,
        "highest": null,
        "lowest": null,
        "spread": null,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": null,
        "largestAbsoluteMoveValue": null,
        "values": [
          {
            "asset": "BTC",
            "value": null
          },
          {
            "asset": "ETH",
            "value": null
          },
          {
            "asset": "SOL",
            "value": null
          }
        ],
        "previousSpread": null,
        "spreadChange": null,
        "dispersionDirection": "unavailable"
      },
      {
        "id": "majors-cross-iv-minus-realised-dispersion",
        "metric": "1W IV minus 7D realised volatility dispersion",
        "unit": "volatility points",
        "leader": "BTC",
        "laggard": "ETH",
        "highest": -3.14,
        "lowest": -4.32,
        "spread": 1.18,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": "ETH",
        "largestAbsoluteMoveValue": -4.32,
        "values": [
          {
            "asset": "BTC",
            "value": -3.14
          },
          {
            "asset": "ETH",
            "value": -4.32
          },
          {
            "asset": "SOL",
            "value": null
          }
        ]
      },
      {
        "id": "majors-cross-spot-performance",
        "metric": "24H spot performance dispersion",
        "unit": "percentage points",
        "leader": "BTC",
        "laggard": "ETH",
        "highest": -0.83,
        "lowest": -1.03,
        "spread": 0.2,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": "ETH",
        "largestAbsoluteMoveValue": -1.03,
        "values": [
          {
            "asset": "BTC",
            "value": -0.83
          },
          {
            "asset": "ETH",
            "value": -1.03
          },
          {
            "asset": "SOL",
            "value": null
          }
        ]
      },
      {
        "id": "majors-cross-term-structure-change",
        "metric": "1Y minus 1W ATM IV slope change dispersion",
        "unit": "volatility points",
        "leader": null,
        "laggard": null,
        "highest": null,
        "lowest": null,
        "spread": null,
        "highestToLowestRatio": null,
        "largestAbsoluteMoveAsset": null,
        "largestAbsoluteMoveValue": null,
        "values": [
          {
            "asset": "BTC",
            "value": null
          },
          {
            "asset": "ETH",
            "value": null
          },
          {
            "asset": "SOL",
            "value": null
          }
        ]
      }
    ]
  },
  "marketDiary": {
    "schemaVersion": 1,
    "source": "local-news-mcp",
    "generatedAt": "2026-09-20T16:30:00+00:00",
    "window": {
      "startAt": "2026-09-19T16:30:00+00:00",
      "endAt": "2026-09-20T16:30:00+00:00",
      "endExclusive": true
    },
    "headline": "Major-coin options diverge as Solana volatility pulls further above Bitcoin",
    "standfirst": "Major-coin one-week ATM IV dispersion widened 2.30 volatility points to 21.40 points at the cutoff, with Solana one-week ATM IV at 55.38% and Bitcoin one-week ATM IV at 33.98%. Solana also posted the largest one-week ATM IV change, rising 2.00 points, while Bitcoin and Ether one-week ATM IV each edged lower. The widening relative-volatility gap ranked at the 81.8 percentile of the available history.",
    "days": [
      {
        "reportDate": "2026-09-20",
        "headline": "Solana extends major-coin volatility lead",
        "summary": "One-week implied-volatility dispersion widened as Solana rose while Bitcoin and Ether edged lower.",
        "macro": {
          "summary": "No qualifying macro context was retained.",
          "events": []
        },
        "crypto": {
          "summary": "The Block reported Bitcoin ETF inflows and a reversal in Ether fund-flow momentum.",
          "events": [
            {
              "eventId": "778fac37-92fe-4da0-b881-d566c653f62a",
              "title": "Bitcoin ETFs eke out positive week with $433 million Friday inflow as ether funds snap four-week inflow streak",
              "publisher": "The Block",
              "url": "https://www.theblock.co/news/markets/2026-09-19-bitcoin-etfs-eke-out-positive-week-with-433-million-friday-inflow-as-ether-funds-snap-four-week-inflow-streak-415871",
              "publishedAt": "2026-09-19T18:01:09+00:00"
            }
          ]
        }
      }
    ]
  },
  "summaryMetrics": {
    "basis": "Equal-weight average across BTC, ETH and SOL headline metrics",
    "unit": "volatility points",
    "atmIvChange": 0.2333333333333333,
    "rr25Change": -0.7833333333333333,
    "bf25Change": 0.09666666666666666
  },
  "commentary": {
    "source": "codex",
    "model": "gpt-5.6-terra",
    "headline": "Solana widens the major-coin volatility divide",
    "executiveSummary": "Solana’s 55.38% one-week ATM IV stood 21.40 volatility points above Bitcoin’s 33.98%, widening the major-coin level spread by 2.30 points. Solana’s 2.00-point one-week ATM IV increase contrasted with small declines for Bitcoin and Ether.",
    "evidenceIds": [
      "majors-cross-1w-atm-level-dispersion",
      "majors-cross-1w-atm-change-dispersion"
    ],
    "newsSummary": "The Block reported a $433 million Friday net inflow for Bitcoin ETFs and said Ether funds ended a four-week inflow streak.",
    "marketContextSummary": "The ETF-flow report offers context for Bitcoin and Ether, but it does not establish a direct explanation for the three-asset volatility dispersion.",
    "marketContext": [
      {
        "title": "ETF flows and major-coin dispersion",
        "explanation": "The retained report concerns Bitcoin and Ether fund flows, whereas the measured one-week ATM IV gap is between Solana and Bitcoin; no direct explanatory link is established.",
        "relationship": "no-clear-link",
        "confidence": "low",
        "surface_evidence_ids": [
          "majors-cross-1w-atm-level-dispersion"
        ],
        "news_evidence_ids": [
          "778fac37-92fe-4da0-b881-d566c653f62a"
        ]
      }
    ],
    "newsEvidenceIds": [
      "778fac37-92fe-4da0-b881-d566c653f62a"
    ]
  }
}
