{"schemaVersion":1,"symbol":"GRND","days":90,"observations":[{"symbol":"GRND","expiry":"2026-11-20","observed_at":"2026-10-21T19:55:01.274000+00:00","captured_at":"2026-10-22T05:09:16.462Z","last_trade_at":"2026-10-21T23:53:17.898249185Z","price":13.97,"iv_pct":60.88319033530571,"implied_move_pct":14.103905381918706,"put_call_skew_pp":-58.777047577206844,"model_version":"delta-comparison-v1","source_url":"https://intraalpha.com/companies/GRND","source_hash":"36feb2c552038bb9b01d369a01eadaf1c6aac94bd0473540e62db2600acec2f9"}],"dailyIv":[],"dailyIvModel":"theta-four-listed-fridays-50delta-v2","truncated":false,"expiries":["2026-11-20"],"url":"https://intraalpha.com/companies/GRND","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"}}