{"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/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=2026-10-16&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":"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":15.720000267028809,"previous_close":16.299999237060547,"delta_neutral":12.892403710170042,"gamma_neutral":15.720000267028809,"gamma_max":18.839896542977087,"total_open_interest":2053,"previous_open_interest":2432,"listed_contracts":101,"listed_calls":64,"listed_puts":49,"gamma_max_distance_pct":19.846668084936113,"delta_neutral_distance_pct":-17.98725514521383,"gamma_neutral_distance_pct":0,"open_interest_change_1d_pct":-15.583881578947366,"call_open_interest":1467,"put_open_interest":586,"put_call_open_interest_ratio":0.3994546693933197,"nearest_expiration_max_pain":17,"nearest_expiration_max_pain_expiry":"2026-11-20","nearest_expiration_max_pain_distance_pct":8.142491801707331,"all_expiration_max_pain":16,"net_gamma_exposure":49797.57332524528,"net_gamma_exposure_per_100k_open_interest":2425600.2593884696,"gamma_exposure_flip":null,"gamma_exposure_flip_distance_pct":null,"call_wall":20,"call_wall_distance_pct":27.226460943185092,"put_wall":14,"put_wall_distance_pct":-10.941477339770431,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":3067},"history_summary":null,"advanced_options":{"data_through":"2026-10-16","analysis_coverage":0.9444,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"price":15.72,"totalOi":2532,"analysisCoverage":0.9444,"avgIvPct":696.2,"ivRank":43.3,"iv52wHighPct":1480.6,"iv52wLowPct":97.9,"frontDte":35,"termPremiumPp":13.483,"riskReversalFrontPp":18.17,"riskReversal30dPp":18.17,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.418,"putCallOiFrontRatio":1.072,"putCallVolumeFrontRatio":0,"optionVolume":279,"volumeOiRatio":0.11019,"netDeltaNormalized":0.113658,"dealerDeltaNormalized":-0.113523,"gexPer100kOi":369123.222749,"vannaPer100kOi":1974.723539,"charmPer100kOi":35308.056872,"weekendDeltaShiftPer100kOi":105963.665087,"ivSurfaceRangePp":33.1,"gammaFlipDistancePct":20.992366,"maxPainDistancePct":8.142494,"peakCallDistancePct":-4.580153,"peakPutDistancePct":-17.302799},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/SPAL.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."}