{"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/GPZ","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/GPZ.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/GPZ.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":"GPZ","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":21.3700008392334,"previous_close":21.34000015258789,"delta_neutral":null,"gamma_neutral":null,"gamma_max":null,"total_open_interest":143,"previous_open_interest":140,"listed_contracts":17,"listed_calls":7,"listed_puts":11,"gamma_max_distance_pct":null,"delta_neutral_distance_pct":null,"gamma_neutral_distance_pct":null,"open_interest_change_1d_pct":2.142857142857143,"call_open_interest":25,"put_open_interest":118,"put_call_open_interest_ratio":4.72,"nearest_expiration_max_pain":26,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":21.66588197912627,"all_expiration_max_pain":25,"net_gamma_exposure":-15694.942240618679,"net_gamma_exposure_per_100k_open_interest":-10975484.084348725,"gamma_exposure_flip":null,"gamma_exposure_flip_distance_pct":null,"call_wall":20,"call_wall_distance_pct":-6.4108600160567155,"put_wall":22,"put_wall_distance_pct":2.9480539823376133,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":4624},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.6667,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"GPZ","price":21.37,"totalOi":143,"analysisCoverage":0.6667,"avgIvPct":41.2,"ivRank":6.3,"iv52wHighPct":112.44,"iv52wLowPct":36.4,"frontDte":49,"frontAtmIvPct":29.9129,"backAtmIvPct":29.9129,"termPremiumPp":0,"expectedMoveFrontPct":10.96,"straddleFrontPct":null,"straddle30dPct":null,"riskReversalFrontPp":null,"riskReversal30dPp":null,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":4.72,"putCallOiFrontRatio":0,"putCallVolumeFrontRatio":0,"optionVolume":2,"volumeOiRatio":0.013986,"netDeltaNormalized":-0.372657,"dealerDeltaNormalized":0.372657,"gexPer100kOi":-2414335.664336,"vannaPer100kOi":0,"charmPer100kOi":0,"weekendDeltaShiftPer100kOi":0,"ivSurfaceRangePp":28.6,"gammaFlipDistancePct":null,"maxPainDistancePct":16.98643,"peakCallDistancePct":7.627515,"peakPutDistancePct":null},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GPZ.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."}