{"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/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=2026-10-16&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":"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":20.90999984741211,"previous_close":21.190000534057617,"delta_neutral":23.180048673282023,"gamma_neutral":36.11104839205085,"gamma_max":40.89654109819847,"total_open_interest":198,"previous_open_interest":163,"listed_contracts":20,"listed_calls":10,"listed_puts":11,"gamma_max_distance_pct":95.58365086865345,"delta_neutral_distance_pct":10.856283321067849,"gamma_neutral_distance_pct":72.69750672198148,"open_interest_change_1d_pct":21.472392638036812,"call_open_interest":37,"put_open_interest":161,"put_call_open_interest_ratio":4.351351351351352,"nearest_expiration_max_pain":22,"nearest_expiration_max_pain_expiry":"2026-11-20","nearest_expiration_max_pain_distance_pct":5.212817601826968,"all_expiration_max_pain":22,"net_gamma_exposure":-35360.912740236636,"net_gamma_exposure_per_100k_open_interest":-17859046.838503353,"gamma_exposure_flip":36.11104839205085,"gamma_exposure_flip_distance_pct":72.69750672198148,"call_wall":20,"call_wall_distance_pct":-4.3519839983391195,"put_wall":21,"put_wall_distance_pct":0.43041680174392416,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":4383},"history_summary":null,"advanced_options":{"data_through":"2026-10-16","analysis_coverage":0.7778,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"price":20.91,"totalOi":198,"analysisCoverage":0.7778,"avgIvPct":44.3,"ivRank":10.4,"iv52wHighPct":112.44,"iv52wLowPct":36.4,"frontDte":35,"termPremiumPp":-0.2147,"riskReversalFrontPp":null,"riskReversal30dPp":null,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":4.351,"putCallOiFrontRatio":9.75,"putCallVolumeFrontRatio":0,"optionVolume":0,"volumeOiRatio":0,"netDeltaNormalized":-0.25096,"dealerDeltaNormalized":0.25101,"gexPer100kOi":-4069383.838384,"vannaPer100kOi":505.050505,"charmPer100kOi":0,"weekendDeltaShiftPer100kOi":0,"ivSurfaceRangePp":9.9,"gammaFlipDistancePct":-28.598757,"maxPainDistancePct":5.212817,"peakCallDistancePct":null,"peakPutDistancePct":null},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GPZ.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."}