{"schemaVersion":1,"asset":"SOL","reportDate":"2026-09-10","timestamps":{"currentSnapshotAt":"2026-09-10T16:30:00+00:00","previousSnapshotAt":"2026-09-09T16:30:00+00:00","generatedAt":"2026-09-10T16:30:42+00:00"},"comparison":{"status":"available","note":null},"provenance":{"reportArtifact":"published daily report","sourceReport":"SOL","sourceReportHref":"/reports/sol/2026-09-10","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":1789662600172,"availability":"available","unavailableReason":null,"atmIv":{"current":52.96,"previous":54.66,"change":-1.7,"percentChange":-3.11},"rr25":{"current":-0.49,"previous":0.9,"change":-1.39,"percentChange":-154.44},"bf25":{"current":4.13,"previous":4.48,"change":-0.35,"percentChange":-7.81}},{"tenor":"2W","targetExpiry":1790267400172,"availability":"available","unavailableReason":null,"atmIv":{"current":52.33,"previous":52.93,"change":-0.6,"percentChange":-1.13},"rr25":{"current":-0.12,"previous":1.86,"change":-1.98,"percentChange":-106.45},"bf25":{"current":3.88,"previous":4.1,"change":-0.22,"percentChange":-5.37}},{"tenor":"1M","targetExpiry":1791649800172,"availability":"available","unavailableReason":null,"atmIv":{"current":51.94,"previous":52.53,"change":-0.59,"percentChange":-1.12},"rr25":{"current":0.55,"previous":2.16,"change":-1.61,"percentChange":-74.54},"bf25":{"current":3.77,"previous":4.16,"change":-0.39,"percentChange":-9.38}},{"tenor":"3M","targetExpiry":1796920200172,"availability":"available","unavailableReason":null,"atmIv":{"current":51.49,"previous":51.7,"change":-0.21,"percentChange":-0.41},"rr25":{"current":2.15,"previous":3.22,"change":-1.07,"percentChange":-33.23},"bf25":{"current":4.11,"previous":5.14,"change":-1.03,"percentChange":-20.04}},{"tenor":"6M","targetExpiry":1804782600172,"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":1812645000172,"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":1820593800172,"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 7d is incomplete: expected 10080 one-minute returns, found 10044 (99.6429% coverage); returns spanning missing minutes are excluded"}