{"schemaVersion":1,"asset":"SOL","reportDate":"2026-09-13","timestamps":{"currentSnapshotAt":"2026-09-13T16:30:00+00:00","previousSnapshotAt":"2026-09-12T16:30:00+00:00","generatedAt":"2026-09-13T16:30:59+00:00"},"comparison":{"status":"available","note":null},"provenance":{"reportArtifact":"published daily report","sourceReport":"SOL","sourceReportHref":"/reports/sol/2026-09-13","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","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":null},"tenors":[{"tenor":"1W","targetExpiry":1789921800721,"availability":"available","unavailableReason":null,"atmIv":{"current":53.92,"previous":49.87,"change":4.05,"percentChange":8.12},"rr25":{"current":1.89,"previous":4.48,"change":-2.59,"percentChange":-57.81},"bf25":{"current":4.31,"previous":3.66,"change":0.65,"percentChange":17.76}},{"tenor":"2W","targetExpiry":1790526600721,"availability":"available","unavailableReason":null,"atmIv":{"current":52.96,"previous":51.45,"change":1.51,"percentChange":2.93},"rr25":{"current":2.03,"previous":4.47,"change":-2.44,"percentChange":-54.59},"bf25":{"current":3.89,"previous":3.25,"change":0.64,"percentChange":19.69}},{"tenor":"1M","targetExpiry":1791909000721,"availability":"available","unavailableReason":null,"atmIv":{"current":53.64,"previous":52.56,"change":1.08,"percentChange":2.05},"rr25":{"current":2.1,"previous":3.32,"change":-1.22,"percentChange":-36.75},"bf25":{"current":3.74,"previous":3.82,"change":-0.08,"percentChange":-2.09}},{"tenor":"3M","targetExpiry":1797179400721,"availability":"available","unavailableReason":null,"atmIv":{"current":52.73,"previous":51.93,"change":0.8,"percentChange":1.54},"rr25":{"current":2.86,"previous":2.96,"change":-0.1,"percentChange":-3.38},"bf25":{"current":4.54,"previous":4.76,"change":-0.22,"percentChange":-4.62}},{"tenor":"6M","targetExpiry":1805041800721,"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":1812904200721,"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":1820853000721,"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":null,"realisedVolatilityUnavailableReason":"Canonical SOL index coverage for 30d is incomplete: expected 43200 one-minute returns, found 43164 (99.9167% coverage); returns spanning missing minutes are excluded"}