{"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/HPK","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/HPK.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/HPK.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":"HPK","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":10.550000190734863,"previous_close":9.949999809265137,"delta_neutral":6.702973359905274,"gamma_neutral":4.57079576312457,"gamma_max":9.495748657488178,"total_open_interest":3286,"previous_open_interest":5753,"listed_contracts":22,"listed_calls":22,"listed_puts":11,"gamma_max_distance_pct":-9.992905347741521,"delta_neutral_distance_pct":-36.46470863771258,"gamma_neutral_distance_pct":-56.67492245982424,"open_interest_change_1d_pct":-42.88197462193638,"call_open_interest":2621,"put_open_interest":665,"put_call_open_interest_ratio":0.2537199542159481,"nearest_expiration_max_pain":7.5,"nearest_expiration_max_pain_expiry":"2026-11-20","nearest_expiration_max_pain_distance_pct":-28.90995389188154,"all_expiration_max_pain":7.5,"net_gamma_exposure":127572.33448435279,"net_gamma_exposure_per_100k_open_interest":3882298.675725891,"gamma_exposure_flip":4.57079576312457,"gamma_exposure_flip_distance_pct":-56.67492245982424,"call_wall":10,"call_wall_distance_pct":-5.21327185584205,"put_wall":7.5,"put_wall_distance_pct":-28.90995389188154,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":2741},"history_summary":null,"advanced_options":{"data_through":"2026-10-16","analysis_coverage":0.8333,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"price":10.55,"totalOi":5711,"analysisCoverage":0.8333,"avgIvPct":616.3,"ivRank":93.5,"iv52wHighPct":652.3,"iv52wLowPct":98.1,"frontDte":null,"termPremiumPp":null,"riskReversalFrontPp":23.83,"riskReversal30dPp":23.83,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.182,"putCallOiFrontRatio":1.117,"putCallVolumeFrontRatio":0,"optionVolume":472,"volumeOiRatio":0.082648,"netDeltaNormalized":0.546642,"dealerDeltaNormalized":-0.468345,"gexPer100kOi":503551.742252,"vannaPer100kOi":-1680.966556,"charmPer100kOi":-30012.257048,"weekendDeltaShiftPer100kOi":-90019.261075,"ivSurfaceRangePp":48.9,"gammaFlipDistancePct":-51.943128,"maxPainDistancePct":-28.909953,"peakCallDistancePct":-5.21327,"peakPutDistancePct":-5.21327},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/HPK.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."}