{"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/GPK","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/GPK.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/GPK.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":"GPK","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":8.779999732971191,"previous_close":8.960000038146973,"delta_neutral":7.637431778775412,"gamma_neutral":3.7851680686163225,"gamma_max":10.597303735811925,"total_open_interest":29564,"previous_open_interest":29203,"listed_contracts":35,"listed_calls":27,"listed_puts":19,"gamma_max_distance_pct":20.69822389648012,"delta_neutral_distance_pct":-13.013302835365003,"gamma_neutral_distance_pct":-56.888745059956804,"open_interest_change_1d_pct":1.236174365647365,"call_open_interest":26615,"put_open_interest":2949,"put_call_open_interest_ratio":0.1108021792222431,"nearest_expiration_max_pain":10,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":13.895219864841103,"all_expiration_max_pain":10,"net_gamma_exposure":1189047.5897992102,"net_gamma_exposure_per_100k_open_interest":4021944.2220241176,"gamma_exposure_flip":3.7851680686163225,"gamma_exposure_flip_distance_pct":-56.888745059956804,"call_wall":12.5,"call_wall_distance_pct":42.36902483105138,"put_wall":10,"put_wall_distance_pct":13.895219864841103,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":1296},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.7778,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"GPK","price":8.78,"totalOi":29564,"analysisCoverage":0.7778,"avgIvPct":310.4,"ivRank":69.3,"iv52wHighPct":412.2,"iv52wLowPct":80.44,"frontDte":null,"frontAtmIvPct":null,"backAtmIvPct":null,"termPremiumPp":null,"expectedMoveFrontPct":null,"straddleFrontPct":null,"straddle30dPct":null,"riskReversalFrontPp":-161.12,"riskReversal30dPp":-161.12,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.111,"putCallOiFrontRatio":0.161,"putCallVolumeFrontRatio":0.04,"optionVolume":196,"volumeOiRatio":0.00663,"netDeltaNormalized":0.405719,"dealerDeltaNormalized":-0.405706,"gexPer100kOi":356572.452983,"vannaPer100kOi":3385.874712,"charmPer100kOi":-55753.619267,"weekendDeltaShiftPer100kOi":-167257.475308,"ivSurfaceRangePp":18.4,"gammaFlipDistancePct":-71.526196,"maxPainDistancePct":13.895216,"peakCallDistancePct":13.895216,"peakPutDistancePct":-14.578588},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GPK.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."}