{"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/ALKS","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/ALKS.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/ALKS.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":"ALKS","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":41.220001220703125,"previous_close":40.099998474121094,"delta_neutral":39.97634141400215,"gamma_neutral":41.10915854643325,"gamma_max":53.958968185456484,"total_open_interest":16642,"previous_open_interest":21087,"listed_contracts":174,"listed_calls":110,"listed_puts":86,"gamma_max_distance_pct":30.90481947476289,"delta_neutral_distance_pct":-3.017127049662327,"gamma_neutral_distance_pct":-0.2689050727494972,"open_interest_change_1d_pct":-21.07933798074643,"call_open_interest":9663,"put_open_interest":6979,"put_call_open_interest_ratio":0.7222394701438477,"nearest_expiration_max_pain":45,"nearest_expiration_max_pain_expiry":"2026-11-20","nearest_expiration_max_pain_distance_pct":9.17030244384936,"all_expiration_max_pain":42,"net_gamma_exposure":9815.410939413296,"net_gamma_exposure_per_100k_open_interest":58979.7556748786,"gamma_exposure_flip":41.10915854643325,"gamma_exposure_flip_distance_pct":-0.2689050727494972,"call_wall":55,"call_wall_distance_pct":33.43036965359366,"put_wall":37,"put_wall_distance_pct":-10.237751323946082,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":"above","open_interest_rank":1583},"history_summary":null,"advanced_options":{"data_through":"2026-10-16","analysis_coverage":0.9444,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"price":41.22,"totalOi":20323,"analysisCoverage":0.9444,"avgIvPct":197.2,"ivRank":55.7,"iv52wHighPct":302.7,"iv52wLowPct":64.7,"frontDte":35,"termPremiumPp":-4.359,"riskReversalFrontPp":-25.73,"riskReversal30dPp":-25.73,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.86,"putCallOiFrontRatio":0.422,"putCallVolumeFrontRatio":7.659,"optionVolume":3602,"volumeOiRatio":0.177238,"netDeltaNormalized":-0.041547,"dealerDeltaNormalized":0.041502,"gexPer100kOi":220158.588791,"vannaPer100kOi":4256.261379,"charmPer100kOi":-261772.376126,"weekendDeltaShiftPer100kOi":-785317.128377,"ivSurfaceRangePp":41.7,"gammaFlipDistancePct":31.97477,"maxPainDistancePct":6.744299,"peakCallDistancePct":4.318292,"peakPutDistancePct":-10.237749},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/ALKS.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."}