{"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/EFX","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/EFX.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/EFX.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":"EFX","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":140,"previous_close":139.72999572753906,"delta_neutral":163.51811135249193,"gamma_neutral":172.58766969032627,"gamma_max":203.62487678526224,"total_open_interest":7178,"previous_open_interest":7277,"listed_contracts":200,"listed_calls":107,"listed_puts":98,"gamma_max_distance_pct":45.446340560901604,"delta_neutral_distance_pct":16.79865096606566,"gamma_neutral_distance_pct":23.27690692166162,"open_interest_change_1d_pct":-1.3604507351930741,"call_open_interest":2348,"put_open_interest":4830,"put_call_open_interest_ratio":2.057069846678024,"nearest_expiration_max_pain":155,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":10.714285714285714,"all_expiration_max_pain":165,"net_gamma_exposure":-978925.7866812467,"net_gamma_exposure_per_100k_open_interest":-13637862.72891121,"gamma_exposure_flip":172.58766969032627,"gamma_exposure_flip_distance_pct":23.27690692166162,"call_wall":160,"call_wall_distance_pct":14.285714285714285,"put_wall":140,"put_wall_distance_pct":0,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":2327},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.9444,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"EFX","price":140,"totalOi":7178,"analysisCoverage":0.9444,"avgIvPct":57.6,"ivRank":40.9,"iv52wHighPct":69.15,"iv52wLowPct":49.6,"frontDte":14,"frontAtmIvPct":46.7711,"backAtmIvPct":48.2537,"termPremiumPp":-1.4826,"expectedMoveFrontPct":9.16,"straddleFrontPct":7.29,"straddle30dPct":7.29,"riskReversalFrontPp":-12.02,"riskReversal30dPp":-12.02,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":2.057,"putCallOiFrontRatio":2.485,"putCallVolumeFrontRatio":1.039,"optionVolume":771,"volumeOiRatio":0.107412,"netDeltaNormalized":-0.262143,"dealerDeltaNormalized":0.262143,"gexPer100kOi":-19882709.94706,"vannaPer100kOi":1434.940095,"charmPer100kOi":5139565.338534,"weekendDeltaShiftPer100kOi":15418682.084146,"ivSurfaceRangePp":61.6,"gammaFlipDistancePct":null,"maxPainDistancePct":17.857143,"peakCallDistancePct":3.571429,"peakPutDistancePct":0},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/EFX.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."}