{"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/ACH","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/ACH.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/ACH.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":"ACH","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":0.5052000284194946,"previous_close":0.5577999949455261,"delta_neutral":null,"gamma_neutral":null,"gamma_max":null,"total_open_interest":35636,"previous_open_interest":35538,"listed_contracts":17,"listed_calls":36,"listed_puts":22,"gamma_max_distance_pct":null,"delta_neutral_distance_pct":null,"gamma_neutral_distance_pct":null,"open_interest_change_1d_pct":0.27576115707130394,"call_open_interest":34201,"put_open_interest":1435,"put_call_open_interest_ratio":0.04195783749013187,"nearest_expiration_max_pain":1,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":97.94139820784936,"all_expiration_max_pain":2,"net_gamma_exposure":233293.66969159315,"net_gamma_exposure_per_100k_open_interest":654657.2839027757,"gamma_exposure_flip":null,"gamma_exposure_flip_distance_pct":null,"call_wall":3,"call_wall_distance_pct":493.82419462354807,"put_wall":0.5,"put_wall_distance_pct":-1.0293008960753198,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":1185},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.8333,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"ACH","price":0.51,"totalOi":35636,"analysisCoverage":0.8333,"avgIvPct":606.3,"ivRank":71.7,"iv52wHighPct":781,"iv52wLowPct":163.39,"frontDte":105,"frontAtmIvPct":124.9744,"backAtmIvPct":124.9744,"termPremiumPp":0,"expectedMoveFrontPct":67.03,"straddleFrontPct":null,"straddle30dPct":null,"riskReversalFrontPp":-77.04,"riskReversal30dPp":-77.04,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.042,"putCallOiFrontRatio":1.167,"putCallVolumeFrontRatio":0,"optionVolume":40,"volumeOiRatio":0.001122,"netDeltaNormalized":0.509754,"dealerDeltaNormalized":-0.50911,"gexPer100kOi":5031.120216,"vannaPer100kOi":-1790.324391,"charmPer100kOi":0,"weekendDeltaShiftPer100kOi":0,"ivSurfaceRangePp":0,"gammaFlipDistancePct":207.843137,"maxPainDistancePct":292.156863,"peakCallDistancePct":-1.960784,"peakPutDistancePct":-1.960784},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/ACH.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."}