{"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/DUSA","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/DUSA.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/DUSA.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":"DUSA","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":55.150001525878906,"previous_close":54.599998474121094,"delta_neutral":null,"gamma_neutral":null,"gamma_max":null,"total_open_interest":215,"previous_open_interest":215,"listed_contracts":10,"listed_calls":9,"listed_puts":2,"gamma_max_distance_pct":null,"delta_neutral_distance_pct":null,"gamma_neutral_distance_pct":null,"open_interest_change_1d_pct":0,"call_open_interest":209,"put_open_interest":6,"put_call_open_interest_ratio":0.028708133971291867,"nearest_expiration_max_pain":55,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":-0.2719882533611874,"all_expiration_max_pain":44,"net_gamma_exposure":119472.58478934458,"net_gamma_exposure_per_100k_open_interest":55568644.08806724,"gamma_exposure_flip":null,"gamma_exposure_flip_distance_pct":null,"call_wall":55,"call_wall_distance_pct":-0.2719882533611874,"put_wall":62,"put_wall_distance_pct":12.420667787120115,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":4456},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.8333,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"DUSA","price":55.15,"totalOi":215,"analysisCoverage":0.8333,"avgIvPct":22.5,"ivRank":8.3,"iv52wHighPct":89.1,"iv52wLowPct":16.5,"frontDte":14,"frontAtmIvPct":26.0918,"backAtmIvPct":26.0918,"termPremiumPp":0,"expectedMoveFrontPct":5.11,"straddleFrontPct":null,"straddle30dPct":null,"riskReversalFrontPp":null,"riskReversal30dPp":null,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.029,"putCallOiFrontRatio":0,"putCallVolumeFrontRatio":0,"optionVolume":0,"volumeOiRatio":0,"netDeltaNormalized":0.497372,"dealerDeltaNormalized":-0.31693,"gexPer100kOi":34816697.674419,"vannaPer100kOi":-465.116279,"charmPer100kOi":-2631162.790698,"weekendDeltaShiftPer100kOi":-7893953.488372,"ivSurfaceRangePp":0,"gammaFlipDistancePct":-11.133273,"maxPainDistancePct":-20.217588,"peakCallDistancePct":null,"peakPutDistancePct":null},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/DUSA.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."}