{"schemaVersion":1,"symbol":"USFR","days":90,"observations":[{"symbol":"USFR","expiry":"2026-11-20","observed_at":"2026-10-26T13:30:29.659000+00:00","captured_at":"2026-10-26T13:32:06.111Z","last_trade_at":"2026-10-26T13:32:00.220518953Z","price":50.54,"iv_pct":5.502348867415199,"implied_move_pct":2.250005545798085,"put_call_skew_pp":2.495607982088921,"model_version":"delta-comparison-v1","source_url":"https://intraalpha.com/companies/USFR","source_hash":"87fcbcd51a0755b9ce785476da4e7909b9fd089dafda734f416471a10dd264f3"},{"symbol":"USFR","expiry":"2026-11-20","observed_at":"2026-11-03T14:30:31.808000+00:00","captured_at":"2026-11-03T14:41:22.152Z","last_trade_at":"2026-11-03T14:41:18.172452599Z","price":50.43,"iv_pct":4.683141802816125,"implied_move_pct":1.2335818932271858,"put_call_skew_pp":0.7903355186981917,"model_version":"delta-comparison-v1","source_url":"https://intraalpha.com/companies/USFR","source_hash":"2dfb4909577d467744b3f750a6b456d4a3274ec45c1a32acbd476157c6319b1e"}],"dailyIv":[],"dailyIvModel":"theta-four-listed-fridays-50delta-v2","truncated":false,"expiries":["2026-11-20"],"url":"https://intraalpha.com/companies/USFR","methodology":"https://intraalpha.com/resources/options-delta-methodology","units":{"iv_pct":"annualized percent","implied_move_pct":"percent of underlying price","put_call_skew_pp":"percentage points","price":"USD","dailyBlend.iv_pct":"annualized percent","dailyBlend.put_call_skew_pp":"percentage points; mean put IV minus call IV across four expiries","dailyBlend.implied_move_pct":"percent of spot; mean per-expiry mean call/put IV percent times sqrt(calendar days / 365.25); IV-based estimate, not quoted straddle premium"},"dailyBlend":[]}