{"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/ALK","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/ALK.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/ALK.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":"ALK","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":35.130001068115234,"previous_close":36.5,"delta_neutral":36.15674055395702,"gamma_neutral":33.94408638338608,"gamma_max":47.04375969322895,"total_open_interest":68603,"previous_open_interest":91110,"listed_contracts":307,"listed_calls":189,"listed_puts":146,"gamma_max_distance_pct":33.913345467919456,"delta_neutral_distance_pct":2.92268560951932,"gamma_neutral_distance_pct":-3.375788923062453,"open_interest_change_1d_pct":-24.703106135440674,"call_open_interest":44969,"put_open_interest":23634,"put_call_open_interest_ratio":0.5255620538593253,"nearest_expiration_max_pain":40,"nearest_expiration_max_pain_expiry":"2026-11-20","nearest_expiration_max_pain_distance_pct":13.862791869667445,"all_expiration_max_pain":40,"net_gamma_exposure":382872.68376787764,"net_gamma_exposure_per_100k_open_interest":558099.0390622533,"gamma_exposure_flip":33.94408638338608,"gamma_exposure_flip_distance_pct":-3.375788923062453,"call_wall":45,"call_wall_distance_pct":28.095640853375876,"put_wall":35,"put_wall_distance_pct":-0.3700571140409848,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":772},"history_summary":null,"advanced_options":{"data_through":"2026-10-16","analysis_coverage":1,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"price":35.13,"totalOi":91945,"analysisCoverage":1,"avgIvPct":250.8,"ivRank":100,"iv52wHighPct":250.8,"iv52wLowPct":55.84,"frontDte":35,"termPremiumPp":2.5913,"riskReversalFrontPp":2.53,"riskReversal30dPp":2.53,"butterflyFrontPp":3.03,"butterfly30dPp":3.03,"putCallOiRatio":0.461,"putCallOiFrontRatio":1.198,"putCallVolumeFrontRatio":0.776,"optionVolume":4379,"volumeOiRatio":0.047626,"netDeltaNormalized":-0.027572,"dealerDeltaNormalized":0.027445,"gexPer100kOi":-1944196.345641,"vannaPer100kOi":2844.091576,"charmPer100kOi":22341.617271,"weekendDeltaShiftPer100kOi":67025.93942,"ivSurfaceRangePp":19.5,"gammaFlipDistancePct":null,"maxPainDistancePct":13.862795,"peakCallDistancePct":6.746371,"peakPutDistancePct":13.862795},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/ALK.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."}