{"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/ALGN","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/ALGN.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/ALGN.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":"ALGN","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":143.74000549316406,"previous_close":145.34500122070312,"delta_neutral":141.03844586837005,"gamma_neutral":143.74000549316406,"gamma_max":157.47208924857384,"total_open_interest":34625,"previous_open_interest":35914,"listed_contracts":461,"listed_calls":239,"listed_puts":247,"gamma_max_distance_pct":9.553418137348576,"delta_neutral_distance_pct":-1.879476500313961,"gamma_neutral_distance_pct":0,"open_interest_change_1d_pct":-3.5891295873475526,"call_open_interest":20914,"put_open_interest":13711,"put_call_open_interest_ratio":0.6555895572343885,"nearest_expiration_max_pain":150,"nearest_expiration_max_pain_expiry":"2026-10-09","nearest_expiration_max_pain_distance_pct":4.355081583139113,"all_expiration_max_pain":150,"net_gamma_exposure":821188.3598172575,"net_gamma_exposure_per_100k_open_interest":2371663.1330462308,"gamma_exposure_flip":null,"gamma_exposure_flip_distance_pct":null,"call_wall":165,"call_wall_distance_pct":14.790589741453026,"put_wall":130,"put_wall_distance_pct":-9.558929294612769,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":1201},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":1,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"ALGN","price":143.74,"totalOi":36547,"analysisCoverage":1,"avgIvPct":137.3,"ivRank":70.6,"iv52wHighPct":167.4,"iv52wLowPct":64.9,"frontDte":7,"frontAtmIvPct":45.5645,"backAtmIvPct":51.638,"termPremiumPp":-6.0735,"expectedMoveFrontPct":6.31,"straddleFrontPct":5.9,"straddle30dPct":5.9,"riskReversalFrontPp":-97.22,"riskReversal30dPp":9.5,"butterflyFrontPp":2.06,"butterfly30dPp":2.06,"putCallOiRatio":0.649,"putCallOiFrontRatio":1.478,"putCallVolumeFrontRatio":1.214,"optionVolume":2313,"volumeOiRatio":0.063288,"netDeltaNormalized":0.020388,"dealerDeltaNormalized":-0.020388,"gexPer100kOi":625567.406353,"vannaPer100kOi":3039.921197,"charmPer100kOi":-1464432.10113,"weekendDeltaShiftPer100kOi":-4393299.039593,"ivSurfaceRangePp":107.7,"gammaFlipDistancePct":60.658133,"maxPainDistancePct":4.355086,"peakCallDistancePct":9.57284,"peakPutDistancePct":0.876583},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/ALGN.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."}