{"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/GPGI","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/GPGI.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/GPGI.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":"GPGI","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":12.470000267028809,"previous_close":12.6899995803833,"delta_neutral":8.818343658096962,"gamma_neutral":4.895800235729911,"gamma_max":10.194318645954223,"total_open_interest":1849,"previous_open_interest":2027,"listed_contracts":28,"listed_calls":19,"listed_puts":11,"gamma_max_distance_pct":-18.24925078062413,"delta_neutral_distance_pct":-29.28353272442965,"gamma_neutral_distance_pct":-60.73937344913611,"open_interest_change_1d_pct":-8.781450419338926,"call_open_interest":1530,"put_open_interest":319,"put_call_open_interest_ratio":0.2084967320261438,"nearest_expiration_max_pain":10,"nearest_expiration_max_pain_expiry":"2026-11-20","nearest_expiration_max_pain_distance_pct":-19.807539808636495,"all_expiration_max_pain":10,"net_gamma_exposure":97890.92852112456,"net_gamma_exposure_per_100k_open_interest":5294263.305631399,"gamma_exposure_flip":4.895800235729911,"gamma_exposure_flip_distance_pct":-60.73937344913611,"call_wall":10,"call_wall_distance_pct":-19.807539808636495,"put_wall":15,"put_wall_distance_pct":20.288690287045256,"gamma_max_cross_direction":"above","delta_neutral_cross_direction":null,"open_interest_rank":3133},"history_summary":null,"advanced_options":{"data_through":"2026-10-16","analysis_coverage":0.9444,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"price":12.47,"totalOi":2028,"analysisCoverage":0.9444,"avgIvPct":756.9,"ivRank":100,"iv52wHighPct":756.9,"iv52wLowPct":86.93,"frontDte":35,"termPremiumPp":5.7827,"riskReversalFrontPp":-103.73,"riskReversal30dPp":-103.73,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.289,"putCallOiFrontRatio":1.677,"putCallVolumeFrontRatio":0,"optionVolume":20,"volumeOiRatio":0.009862,"netDeltaNormalized":0.182707,"dealerDeltaNormalized":-0.182702,"gexPer100kOi":-276782.544379,"vannaPer100kOi":1923.076923,"charmPer100kOi":0,"weekendDeltaShiftPer100kOi":0,"ivSurfaceRangePp":66.7,"gammaFlipDistancePct":-59.903769,"maxPainDistancePct":-19.807538,"peakCallDistancePct":0.240577,"peakPutDistancePct":0.240577},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GPGI.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."}