{"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/GD","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/GD.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/GD.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":"GD","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":330.0899963378906,"previous_close":332.7200012207031,"delta_neutral":334.276355716279,"gamma_neutral":313.00157659371456,"gamma_max":392.78277672384627,"total_open_interest":26732,"previous_open_interest":27017,"listed_contracts":531,"listed_calls":324,"listed_puts":253,"gamma_max_distance_pct":18.992632640033513,"delta_neutral_distance_pct":1.2682478793156409,"gamma_neutral_distance_pct":-5.176897189784515,"open_interest_change_1d_pct":-1.0548913646963023,"call_open_interest":16039,"put_open_interest":10693,"put_call_open_interest_ratio":0.6666874493422283,"nearest_expiration_max_pain":337.5,"nearest_expiration_max_pain_expiry":"2026-10-09","nearest_expiration_max_pain_distance_pct":2.2448434500645273,"all_expiration_max_pain":350,"net_gamma_exposure":428523.9645085643,"net_gamma_exposure_per_100k_open_interest":1603037.4252153386,"gamma_exposure_flip":313.00157659371456,"gamma_exposure_flip_distance_pct":-5.176897189784515,"call_wall":330,"call_wall_distance_pct":-0.027264182159129076,"put_wall":350,"put_wall_distance_pct":6.031689503770621,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":1361},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":1,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"GD","price":330.09,"totalOi":27516,"analysisCoverage":1,"avgIvPct":100.8,"ivRank":87.4,"iv52wHighPct":110.5,"iv52wLowPct":33.4,"frontDte":7,"frontAtmIvPct":25.4901,"backAtmIvPct":23.7993,"termPremiumPp":1.6908,"expectedMoveFrontPct":3.53,"straddleFrontPct":2.81,"straddle30dPct":2.92,"riskReversalFrontPp":-119.85,"riskReversal30dPp":-119.85,"butterflyFrontPp":-0.71,"butterfly30dPp":-0.71,"putCallOiRatio":0.67,"putCallOiFrontRatio":0.443,"putCallVolumeFrontRatio":0.068,"optionVolume":863,"volumeOiRatio":0.031364,"netDeltaNormalized":-0.008062,"dealerDeltaNormalized":0.008006,"gexPer100kOi":1118242.586132,"vannaPer100kOi":2860.154092,"charmPer100kOi":191474.051461,"weekendDeltaShiftPer100kOi":574418.520134,"ivSurfaceRangePp":123.4,"gammaFlipDistancePct":37.008089,"maxPainDistancePct":6.031688,"peakCallDistancePct":0.730104,"peakPutDistancePct":-3.056742},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GD.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."}