{"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/GVA","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/GVA.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/GVA.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":"GVA","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":119.91999816894531,"previous_close":116.8499984741211,"delta_neutral":114.77561750184216,"gamma_neutral":119.91999816894531,"gamma_max":116.74069570472986,"total_open_interest":1025,"previous_open_interest":1025,"listed_contracts":78,"listed_calls":53,"listed_puts":31,"gamma_max_distance_pct":-2.6511862181121773,"delta_neutral_distance_pct":-4.289843850610854,"gamma_neutral_distance_pct":0,"open_interest_change_1d_pct":0,"call_open_interest":753,"put_open_interest":272,"put_call_open_interest_ratio":0.3612217795484728,"nearest_expiration_max_pain":110,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":-8.272180053713686,"all_expiration_max_pain":115,"net_gamma_exposure":133974.55865592716,"net_gamma_exposure_per_100k_open_interest":13070688.649358746,"gamma_exposure_flip":null,"gamma_exposure_flip_distance_pct":null,"call_wall":115,"call_wall_distance_pct":-4.1027336925188544,"put_wall":145,"put_wall_distance_pct":20.91394447465014,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":3674},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.8889,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"GVA","price":119.92,"totalOi":1025,"analysisCoverage":0.8889,"avgIvPct":44.7,"ivRank":6,"iv52wHighPct":94.62,"iv52wLowPct":41.5,"frontDte":14,"frontAtmIvPct":32.4743,"backAtmIvPct":38.0735,"termPremiumPp":-5.5992,"expectedMoveFrontPct":6.36,"straddleFrontPct":null,"straddle30dPct":null,"riskReversalFrontPp":-8.16,"riskReversal30dPp":-8.16,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.361,"putCallOiFrontRatio":0.145,"putCallVolumeFrontRatio":0,"optionVolume":15,"volumeOiRatio":0.014634,"netDeltaNormalized":0.130346,"dealerDeltaNormalized":-0.121317,"gexPer100kOi":18463365.853659,"vannaPer100kOi":-1073.170732,"charmPer100kOi":-2721658.536585,"weekendDeltaShiftPer100kOi":-8164975.609756,"ivSurfaceRangePp":34.4,"gammaFlipDistancePct":-7.963642,"maxPainDistancePct":-4.102735,"peakCallDistancePct":0.066711,"peakPutDistancePct":-12.441628},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GVA.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."}