{"schemaVersion":1,"asset":"SOL","reportDate":"2026-09-14","timestamps":{"currentSnapshotAt":"2026-09-14T16:30:00+00:00","previousSnapshotAt":"2026-09-13T16:30:00+00:00","generatedAt":"2026-09-14T16:30:59+00:00"},"comparison":{"status":"available","note":null},"provenance":{"reportArtifact":"published daily report","sourceReport":"SOL","sourceReportHref":"/reports/sol/2026-09-14","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":1790008200421,"availability":"available","unavailableReason":null,"atmIv":{"current":57.12,"previous":53.92,"change":3.2,"percentChange":5.93},"rr25":{"current":3.1,"previous":1.89,"change":1.21,"percentChange":64.02},"bf25":{"current":4.3,"previous":4.31,"change":-0.01,"percentChange":-0.23}},{"tenor":"2W","targetExpiry":1790613000421,"availability":"available","unavailableReason":null,"atmIv":{"current":55.35,"previous":52.96,"change":2.39,"percentChange":4.51},"rr25":{"current":2.96,"previous":2.03,"change":0.93,"percentChange":45.81},"bf25":{"current":4.42,"previous":3.89,"change":0.53,"percentChange":13.62}},{"tenor":"1M","targetExpiry":1791995400421,"availability":"available","unavailableReason":null,"atmIv":{"current":54.35,"previous":53.64,"change":0.71,"percentChange":1.32},"rr25":{"current":2.82,"previous":2.1,"change":0.72,"percentChange":34.29},"bf25":{"current":4.92,"previous":3.74,"change":1.18,"percentChange":31.55}},{"tenor":"3M","targetExpiry":1797265800421,"availability":"available","unavailableReason":null,"atmIv":{"current":53.46,"previous":52.73,"change":0.73,"percentChange":1.38},"rr25":{"current":2.92,"previous":2.86,"change":0.06,"percentChange":2.1},"bf25":{"current":5.52,"previous":4.54,"change":0.98,"percentChange":21.59}},{"tenor":"6M","targetExpiry":1805128200421,"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":1812990600421,"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":1820939400421,"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"}