{"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/SPYI","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/SPYI.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/SPYI.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":"SPYI","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":53.599998474121094,"previous_close":53.279998779296875,"delta_neutral":53.335733673599606,"gamma_neutral":40.467998847961425,"gamma_max":54.01441963603185,"total_open_interest":18612,"previous_open_interest":18457,"listed_contracts":137,"listed_calls":55,"listed_puts":85,"gamma_max_distance_pct":0.7731738315456265,"delta_neutral_distance_pct":-0.49303135829207,"gamma_neutral_distance_pct":-24.500000000000004,"open_interest_change_1d_pct":0.8397897816546568,"call_open_interest":9635,"put_open_interest":8977,"put_call_open_interest_ratio":0.9317073170731708,"nearest_expiration_max_pain":53,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":-1.1194001701525835,"all_expiration_max_pain":53,"net_gamma_exposure":6959636.168354427,"net_gamma_exposure_per_100k_open_interest":37393274.0616507,"gamma_exposure_flip":40.467998847961425,"gamma_exposure_flip_distance_pct":-24.500000000000004,"call_wall":54,"call_wall_distance_pct":0.7462715247501978,"put_wall":53,"put_wall_distance_pct":-1.1194001701525835,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":"above","open_interest_rank":1623},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.9444,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"SPYI","price":53.6,"totalOi":18612,"analysisCoverage":0.9444,"avgIvPct":25.7,"ivRank":16.1,"iv52wHighPct":54.97,"iv52wLowPct":20.1,"frontDte":14,"frontAtmIvPct":18.4838,"backAtmIvPct":14.5198,"termPremiumPp":3.964,"expectedMoveFrontPct":3.62,"straddleFrontPct":1.12,"straddle30dPct":1.12,"riskReversalFrontPp":2.97,"riskReversal30dPp":2.97,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.932,"putCallOiFrontRatio":0.518,"putCallVolumeFrontRatio":0.601,"optionVolume":1169,"volumeOiRatio":0.062809,"netDeltaNormalized":0.054638,"dealerDeltaNormalized":-0.048318,"gexPer100kOi":29878128.841608,"vannaPer100kOi":2321.083172,"charmPer100kOi":-221808.510638,"weekendDeltaShiftPer100kOi":-665420.159037,"ivSurfaceRangePp":109.9,"gammaFlipDistancePct":-1.063433,"maxPainDistancePct":-1.119403,"peakCallDistancePct":0.746269,"peakPutDistancePct":-2.985075},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/SPYI.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."}