{"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/MPC","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/MPC.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/MPC.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":"MPC","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":478.07000732421875,"previous_close":476.9200134277344,"delta_neutral":425.30050107356476,"gamma_neutral":457.507792321631,"gamma_max":542.6653317575971,"total_open_interest":96906,"previous_open_interest":129365,"listed_contracts":617,"listed_calls":497,"listed_puts":413,"gamma_max_distance_pct":13.511687293440874,"delta_neutral_distance_pct":-11.038029042233271,"gamma_neutral_distance_pct":-4.301088687340061,"open_interest_change_1d_pct":-25.091021528234066,"call_open_interest":46119,"put_open_interest":50787,"put_call_open_interest_ratio":1.1012164183958888,"nearest_expiration_max_pain":430,"nearest_expiration_max_pain_expiry":"2026-11-20","nearest_expiration_max_pain_distance_pct":-10.055014242217146,"all_expiration_max_pain":350,"net_gamma_exposure":338377.42680712073,"net_gamma_exposure_per_100k_open_interest":349181.08972315514,"gamma_exposure_flip":457.507792321631,"gamma_exposure_flip_distance_pct":-4.301088687340061,"call_wall":430,"call_wall_distance_pct":-10.055014242217146,"put_wall":380,"put_wall_distance_pct":-20.513733516377943,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":626},"history_summary":null,"advanced_options":{"data_through":"2026-10-16","analysis_coverage":1,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"price":478.07,"totalOi":130066,"analysisCoverage":1,"avgIvPct":206.3,"ivRank":100,"iv52wHighPct":206.3,"iv52wLowPct":48.5,"frontDte":35,"termPremiumPp":1.7454,"riskReversalFrontPp":1.91,"riskReversal30dPp":1.91,"butterflyFrontPp":0.42,"butterfly30dPp":0.42,"putCallOiRatio":1.229,"putCallOiFrontRatio":0.732,"putCallVolumeFrontRatio":0.552,"optionVolume":6572,"volumeOiRatio":0.050528,"netDeltaNormalized":0.175923,"dealerDeltaNormalized":-0.151206,"gexPer100kOi":-403217.481894,"vannaPer100kOi":913.382437,"charmPer100kOi":-1234914.581828,"weekendDeltaShiftPer100kOi":-3704743.745483,"ivSurfaceRangePp":8,"gammaFlipDistancePct":null,"maxPainDistancePct":-22.605476,"peakCallDistancePct":-7.963269,"peakPutDistancePct":-1.688037},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/MPC.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."}