{"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/SPAL","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/SPAL.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/SPAL.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":"SPAL","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":18.889999389648438,"previous_close":16.469999313354492,"delta_neutral":14.262577134995325,"gamma_neutral":12.109568025615026,"gamma_max":19.552483998446906,"total_open_interest":1974,"previous_open_interest":2006,"listed_contracts":111,"listed_calls":73,"listed_puts":57,"gamma_max_distance_pct":3.5070652737104093,"delta_neutral_distance_pct":-24.49667762926928,"gamma_neutral_distance_pct":-35.89429106995647,"open_interest_change_1d_pct":-1.5952143569292123,"call_open_interest":1368,"put_open_interest":606,"put_call_open_interest_ratio":0.44298245614035087,"nearest_expiration_max_pain":17,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":-10.005290898443022,"all_expiration_max_pain":16,"net_gamma_exposure":87546.47287126351,"net_gamma_exposure_per_100k_open_interest":4434978.362272721,"gamma_exposure_flip":12.109568025615026,"gamma_exposure_flip_distance_pct":-35.89429106995647,"call_wall":20,"call_wall_distance_pct":5.8761283547729155,"put_wall":14,"put_wall_distance_pct":-25.88671015165896,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":3212},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.9444,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"SPAL","price":18.89,"totalOi":1974,"analysisCoverage":0.9444,"avgIvPct":105.3,"ivRank":0,"iv52wHighPct":158.6,"iv52wLowPct":105.3,"frontDte":14,"frontAtmIvPct":90.2744,"backAtmIvPct":97.9266,"termPremiumPp":-7.6522,"expectedMoveFrontPct":17.68,"straddleFrontPct":null,"straddle30dPct":null,"riskReversalFrontPp":13.7,"riskReversal30dPp":13.7,"butterflyFrontPp":-7.1,"butterfly30dPp":-7.1,"putCallOiRatio":0.443,"putCallOiFrontRatio":0.466,"putCallVolumeFrontRatio":0.465,"optionVolume":101,"volumeOiRatio":0.051165,"netDeltaNormalized":0.2511,"dealerDeltaNormalized":-0.250978,"gexPer100kOi":887321.175279,"vannaPer100kOi":1063.829787,"charmPer100kOi":-415045.592705,"weekendDeltaShiftPer100kOi":-1245187.436677,"ivSurfaceRangePp":44.1,"gammaFlipDistancePct":-5.929063,"maxPainDistancePct":-15.2991,"peakCallDistancePct":32.345156,"peakPutDistancePct":-10.005294},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/SPAL.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."}