{"schema_version":1,"publisher":"Half on a Double","data_through":"2026-10-16","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=2026-10-16&public_schema=4","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":344.2300109863281,"previous_close":337.0299987792969,"delta_neutral":333.18214536141693,"gamma_neutral":319.6382182089111,"gamma_max":388.967366821006,"total_open_interest":27307,"previous_open_interest":30338,"listed_contracts":521,"listed_calls":325,"listed_puts":248,"gamma_max_distance_pct":12.996355462003786,"delta_neutral_distance_pct":-3.2094428935047117,"gamma_neutral_distance_pct":-7.144000230239585,"open_interest_change_1d_pct":-9.990770650669129,"call_open_interest":16380,"put_open_interest":10927,"put_call_open_interest_ratio":0.667094017094017,"nearest_expiration_max_pain":335,"nearest_expiration_max_pain_expiry":"2026-10-23","nearest_expiration_max_pain_distance_pct":-2.681349879948357,"all_expiration_max_pain":340,"net_gamma_exposure":1046690.6106870803,"net_gamma_exposure_per_100k_open_interest":3833048.7079762714,"gamma_exposure_flip":319.6382182089111,"gamma_exposure_flip_distance_pct":-7.144000230239585,"call_wall":350,"call_wall_distance_pct":1.6762016179644033,"put_wall":350,"put_wall_distance_pct":1.6762016179644033,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":1277},"history_summary":null,"advanced_options":{"data_through":"2026-10-16","analysis_coverage":1,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"price":344.23,"totalOi":30390,"analysisCoverage":1,"avgIvPct":87.9,"ivRank":70.7,"iv52wHighPct":110.5,"iv52wLowPct":33.4,"frontDte":7,"termPremiumPp":2.407,"riskReversalFrontPp":1.92,"riskReversal30dPp":1.92,"butterflyFrontPp":-2.17,"butterfly30dPp":0.85,"putCallOiRatio":0.686,"putCallOiFrontRatio":0.385,"putCallVolumeFrontRatio":0.109,"optionVolume":2117,"volumeOiRatio":0.069661,"netDeltaNormalized":0.077195,"dealerDeltaNormalized":-0.075732,"gexPer100kOi":19652385.850609,"vannaPer100kOi":2323.132609,"charmPer100kOi":-329447.186575,"weekendDeltaShiftPer100kOi":-988341.559724,"ivSurfaceRangePp":46.7,"gammaFlipDistancePct":1.347936,"maxPainDistancePct":-1.22883,"peakCallDistancePct":-1.22883,"peakPutDistancePct":-15.754002},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GD.json?date=2026-10-16&public_schema=4","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."}