{"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/ALG","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/ALG.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/ALG.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":"ALG","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":150.66000366210938,"previous_close":152.6199951171875,"delta_neutral":156.7193321692715,"gamma_neutral":159.70674797015377,"gamma_max":187.6167251047823,"total_open_interest":124,"previous_open_interest":135,"listed_contracts":27,"listed_calls":12,"listed_puts":16,"gamma_max_distance_pct":24.529882214497412,"delta_neutral_distance_pct":4.021856073196172,"gamma_neutral_distance_pct":6.0047418612399985,"open_interest_change_1d_pct":-8.148148148148149,"call_open_interest":40,"put_open_interest":84,"put_call_open_interest_ratio":2.1,"nearest_expiration_max_pain":140,"nearest_expiration_max_pain_expiry":"2026-11-20","nearest_expiration_max_pain_distance_pct":-7.0755365744029515,"all_expiration_max_pain":155,"net_gamma_exposure":-3032.885461043449,"net_gamma_exposure_per_100k_open_interest":-2445875.371809233,"gamma_exposure_flip":159.70674797015377,"gamma_exposure_flip_distance_pct":6.0047418612399985,"call_wall":185,"call_wall_distance_pct":22.793040955253243,"put_wall":125,"put_wall_distance_pct":-17.03172908428835,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":4569},"history_summary":null,"advanced_options":{"data_through":"2026-10-16","analysis_coverage":0.6667,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"price":150.66,"totalOi":135,"analysisCoverage":0.6667,"avgIvPct":173.6,"ivRank":67.2,"iv52wHighPct":238.1,"iv52wLowPct":41.7,"frontDte":63,"termPremiumPp":0,"riskReversalFrontPp":null,"riskReversal30dPp":null,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":1.812,"putCallOiFrontRatio":0,"putCallVolumeFrontRatio":0,"optionVolume":0,"volumeOiRatio":0,"netDeltaNormalized":-0.049852,"dealerDeltaNormalized":0.049852,"gexPer100kOi":-1948022.222222,"vannaPer100kOi":0,"charmPer100kOi":0,"weekendDeltaShiftPer100kOi":0,"ivSurfaceRangePp":9.6,"gammaFlipDistancePct":null,"maxPainDistancePct":2.880658,"peakCallDistancePct":null,"peakPutDistancePct":null},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/ALG.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."}