{"schema_version":1,"publisher":"Half on a Double","data_through":"2026-10-02","frequency":"end-of-day","methodology":"market-implied-carry-v1","generation":"market-implied-carry-analytics-20260917T000000Z","canonical_url":"https://halfonadouble.com/stock/GRAL","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/GRAL.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/GRAL.json?date=2026-10-02","definitions_url":"https://halfonadouble.com/methodology.md","license_url":"https://halfonadouble.com/terms.md","disclaimer_url":"https://halfonadouble.com/disclaimer.md","symbol":"GRAL","page_tier":"B","units":{"prices":"USD per share","open_interest":"option contracts","gamma_exposure":"modeled dollar-delta change per USD 1 underlying move","gamma_exposure_normalized":"modeled gamma exposure per 100,000 open option contracts","distances":"percent of close","forward_outcomes":"close-to-close percent return"},"snapshot":{"close":143.25999450683594,"previous_close":132.55999755859375,"delta_neutral":120.27675662971303,"gamma_neutral":124.57036102859809,"gamma_max":150.73726065772564,"total_open_interest":49230,"previous_open_interest":49273,"listed_contracts":203,"listed_calls":165,"listed_puts":139,"gamma_max_distance_pct":5.219367888872083,"delta_neutral_distance_pct":-16.04302579812413,"gamma_neutral_distance_pct":-13.045954345158123,"open_interest_change_1d_pct":-0.0872688896555923,"call_open_interest":24353,"put_open_interest":24877,"put_call_open_interest_ratio":1.0215168562394776,"nearest_expiration_max_pain":85,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":-40.66731588772743,"all_expiration_max_pain":80,"net_gamma_exposure":330181.6816207903,"net_gamma_exposure_per_100k_open_interest":670692.0203550484,"gamma_exposure_flip":124.57036102859809,"gamma_exposure_flip_distance_pct":-13.045954345158123,"call_wall":130,"call_wall_distance_pct":-9.255894887112543,"put_wall":60,"put_wall_distance_pct":-58.11810533251348,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":998},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":1,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"GRAL","price":143.26,"totalOi":49230,"analysisCoverage":1,"avgIvPct":103.4,"ivRank":81.8,"iv52wHighPct":121.6,"iv52wLowPct":21.8,"frontDte":14,"frontAtmIvPct":75.6712,"backAtmIvPct":87.2278,"termPremiumPp":-11.5566,"expectedMoveFrontPct":14.82,"straddleFrontPct":11.45,"straddle30dPct":11.45,"riskReversalFrontPp":12.21,"riskReversal30dPp":12.21,"butterflyFrontPp":-6.65,"butterfly30dPp":-6.65,"putCallOiRatio":1.022,"putCallOiFrontRatio":1.454,"putCallVolumeFrontRatio":1.687,"optionVolume":1172,"volumeOiRatio":0.023807,"netDeltaNormalized":0.173595,"dealerDeltaNormalized":-0.125618,"gexPer100kOi":1219900.467195,"vannaPer100kOi":-127.97075,"charmPer100kOi":1923711.151737,"weekendDeltaShiftPer100kOi":5771133.45521,"ivSurfaceRangePp":46.7,"gammaFlipDistancePct":-6.19852,"maxPainDistancePct":-44.157476,"peakCallDistancePct":4.704733,"peakPutDistancePct":1.214575},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GRAL.json?date=2026-10-02","interpretation":"Catalyst intensity ranks unusual option pricing and activity; it does not identify the event, predict direction or recommend a trade. Directional score summarizes relative positioning under documented model conventions."},"gamma_max_cross_outcomes":[],"missing_value_semantics":"null means unavailable; it never means zero","interpretation":"These are descriptive end-of-day model outputs. Signed GEX uses the published call-positive, put-negative convention and is not observed dealer inventory. None of the fields are live prices, predictions or investment advice."}