{"schemaVersion":1,"asset":"SOL","reportDate":"2026-09-25","timestamps":{"currentSnapshotAt":"2026-09-25T17:28:00+00:00","previousSnapshotAt":"2026-09-24T17:28:00+00:00","generatedAt":"2026-09-25T17:29:49+00:00"},"comparison":{"status":"available","note":null},"provenance":{"reportArtifact":"published daily report","sourceReport":"SOL","sourceReportHref":"/reports/sol/2026-09-25","source":"Derivasys proprietary historical SVI surface and canonical SOL 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","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.","realisedVolatility":"Annualised root-mean-square of one-minute canonical SOL-USD index log returns using a 365-day basis; all windows end at the current snapshot."},"tenors":[{"tenor":"1W","targetExpiry":1790962080275,"availability":"available","unavailableReason":null,"atmIv":{"current":55.4,"previous":55.74,"change":-0.34,"percentChange":-0.61},"rr25":{"current":6.39,"previous":6.2,"change":0.19,"percentChange":3.06},"bf25":{"current":3.53,"previous":3.9,"change":-0.37,"percentChange":-9.49}},{"tenor":"2W","targetExpiry":1791566880275,"availability":"available","unavailableReason":null,"atmIv":{"current":54.79,"previous":56.94,"change":-2.15,"percentChange":-3.78},"rr25":{"current":4.45,"previous":3.16,"change":1.29,"percentChange":40.82},"bf25":{"current":3.89,"previous":4.14,"change":-0.25,"percentChange":-6.04}},{"tenor":"1M","targetExpiry":1792949280275,"availability":"available","unavailableReason":null,"atmIv":{"current":54.59,"previous":56.4,"change":-1.81,"percentChange":-3.21},"rr25":{"current":3.28,"previous":4.38,"change":-1.1,"percentChange":-25.11},"bf25":{"current":3.62,"previous":4.16,"change":-0.54,"percentChange":-12.98}},{"tenor":"3M","targetExpiry":1798219680275,"availability":"unavailable","unavailableReason":"The target tenor falls outside the listed-expiry range at one or both snapshots; extrapolated values are suppressed.","atmIv":{"current":null,"previous":null,"change":null,"percentChange":null},"rr25":{"current":null,"previous":null,"change":null,"percentChange":null},"bf25":{"current":null,"previous":null,"change":null,"percentChange":null}},{"tenor":"6M","targetExpiry":1806082080275,"availability":"unavailable","unavailableReason":"The target tenor falls outside the listed-expiry range at one or both snapshots; extrapolated values are suppressed.","atmIv":{"current":null,"previous":null,"change":null,"percentChange":null},"rr25":{"current":null,"previous":null,"change":null,"percentChange":null},"bf25":{"current":null,"previous":null,"change":null,"percentChange":null}},{"tenor":"9M","targetExpiry":1813944480275,"availability":"unavailable","unavailableReason":"The target tenor falls outside the listed-expiry range at one or both snapshots; extrapolated values are suppressed.","atmIv":{"current":null,"previous":null,"change":null,"percentChange":null},"rr25":{"current":null,"previous":null,"change":null,"percentChange":null},"bf25":{"current":null,"previous":null,"change":null,"percentChange":null}},{"tenor":"1Y","targetExpiry":1821893280275,"availability":"unavailable","unavailableReason":"The target tenor falls outside the listed-expiry range at one or both snapshots; extrapolated values are suppressed.","atmIv":{"current":null,"previous":null,"change":null,"percentChange":null},"rr25":{"current":null,"previous":null,"change":null,"percentChange":null},"bf25":{"current":null,"previous":null,"change":null,"percentChange":null}}],"realisedVolatility":{"source":"canonical/SOL-USDC-INDEX (DERIBIT and OKX indexes)","fallbackObservations":0,"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":"2026-09-25T17:28:00+00:00","spotWindowStart":"2026-09-24T17:28:00+00:00","spotMetric":"spot-index return","spotUnit":"percent","spotMove24hPercent":3,"rv24hPercent":null,"rv7dPercent":null,"rv30dPercent":null,"observations":{"24h":1370,"7d":10010,"30d":43056},"coverage":{"24h":{"status":"unavailable","observedReturns":1370,"expectedReturns":1440,"coveragePercent":95.1389,"missingPriceMinutes":68,"missingIntervals":2,"largestMissingRunMinutes":67,"unavailableReason":"24h RV requires at least 99.5% valid one-minute returns and no price gap over 60 minutes; coverage is 95.1389% with 68 missing price minutes across 2 intervals and a largest gap of 67 minutes."},"7d":{"status":"unavailable","observedReturns":10010,"expectedReturns":10080,"coveragePercent":99.3056,"missingPriceMinutes":68,"missingIntervals":2,"largestMissingRunMinutes":67,"unavailableReason":"7d RV requires at least 99.5% valid one-minute returns and no price gap over 60 minutes; coverage is 99.3056% with 68 missing price minutes across 2 intervals and a largest gap of 67 minutes."},"30d":{"status":"unavailable","observedReturns":43056,"expectedReturns":43200,"coveragePercent":99.6667,"missingPriceMinutes":140,"missingIntervals":4,"largestMissingRunMinutes":67,"unavailableReason":"30d RV requires at least 99.5% valid one-minute returns and no price gap over 60 minutes; coverage is 99.6667% with 140 missing price minutes across 4 intervals and a largest gap of 67 minutes."}},"coveragePolicy":{"version":"observed-minute-returns-v1","minimumCoveragePercent":99.5,"minimumCoveragePercentByWindow":{"24h":99.5,"7d":99.5,"30d":99.5},"maximumMissingRunMinutes":60,"methodology":"Each RV window qualifies independently. RV annualises the mean squared observed one-minute log return; returns spanning gaps are excluded, not interpolated or zero-filled. Partial estimates assume observed minutes are representative and may miss volatility during gaps."},"spotUnavailableReason":null,"oneWeekAtmIvPercent":55.4,"oneWeekIvMinus7dRvPoints":null,"oneWeekIvMinus24hRvPoints":null,"oneWeekIvMinus30dRvPoints":null,"oneWeekIvTo7dRvRatio":null,"spreadPercentile":null},"realisedVolatilityUnavailableReason":null}