{"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/ATHM","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/ATHM.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/ATHM.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":"ATHM","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":20.559999465942383,"previous_close":20.860000610351562,"delta_neutral":16.25200313551239,"gamma_neutral":20.559999465942383,"gamma_max":21.136440484222693,"total_open_interest":755,"previous_open_interest":731,"listed_contracts":21,"listed_calls":16,"listed_puts":9,"gamma_max_distance_pct":2.803701523607448,"delta_neutral_distance_pct":-20.953290089166515,"gamma_neutral_distance_pct":0,"open_interest_change_1d_pct":3.283173734610123,"call_open_interest":681,"put_open_interest":74,"put_call_open_interest_ratio":0.10866372980910426,"nearest_expiration_max_pain":20,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":-2.723732881754308,"all_expiration_max_pain":20,"net_gamma_exposure":91547.11433296469,"net_gamma_exposure_per_100k_open_interest":12125445.60701519,"gamma_exposure_flip":null,"gamma_exposure_flip_distance_pct":null,"call_wall":20,"call_wall_distance_pct":-2.723732881754308,"put_wall":20,"put_wall_distance_pct":-2.723732881754308,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":3831},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.8333,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"ATHM","price":20.56,"totalOi":755,"analysisCoverage":0.8333,"avgIvPct":90.6,"ivRank":49.4,"iv52wHighPct":136.28,"iv52wLowPct":46,"frontDte":14,"frontAtmIvPct":41.0524,"backAtmIvPct":40.3934,"termPremiumPp":0.659,"expectedMoveFrontPct":8.04,"straddleFrontPct":null,"straddle30dPct":null,"riskReversalFrontPp":null,"riskReversal30dPp":null,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.109,"putCallOiFrontRatio":0.615,"putCallVolumeFrontRatio":0,"optionVolume":1,"volumeOiRatio":0.001325,"netDeltaNormalized":0.336449,"dealerDeltaNormalized":-0.333788,"gexPer100kOi":2748035.761589,"vannaPer100kOi":1456.953642,"charmPer100kOi":0,"weekendDeltaShiftPer100kOi":0,"ivSurfaceRangePp":178.2,"gammaFlipDistancePct":-14.250973,"maxPainDistancePct":-2.723735,"peakCallDistancePct":null,"peakPutDistancePct":-2.723735},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/ATHM.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."}