{"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/NPO","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/NPO.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/NPO.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":"NPO","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":332.55999755859375,"previous_close":315.9100036621094,"delta_neutral":329.06998990128045,"gamma_neutral":356.98711714423916,"gamma_max":399.5655651287582,"total_open_interest":861,"previous_open_interest":862,"listed_contracts":66,"listed_calls":59,"listed_puts":34,"gamma_max_distance_pct":20.148414740819426,"delta_neutral_distance_pct":-1.04943699871732,"gamma_neutral_distance_pct":7.345176739527008,"open_interest_change_1d_pct":-0.11600928074245939,"call_open_interest":223,"put_open_interest":638,"put_call_open_interest_ratio":2.8609865470852016,"nearest_expiration_max_pain":300,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":-9.790713795292532,"all_expiration_max_pain":290,"net_gamma_exposure":-48295.438191405556,"net_gamma_exposure_per_100k_open_interest":-5609226.270778811,"gamma_exposure_flip":356.98711714423916,"gamma_exposure_flip_distance_pct":7.345176739527008,"call_wall":340,"call_wall_distance_pct":2.237191032001796,"put_wall":290,"put_wall_distance_pct":-12.797690002116116,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":"above","open_interest_rank":3771},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.8333,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"NPO","price":332.56,"totalOi":861,"analysisCoverage":0.8333,"avgIvPct":52.8,"ivRank":10.3,"iv52wHighPct":106.2,"iv52wLowPct":46.7,"frontDte":14,"frontAtmIvPct":36.2527,"backAtmIvPct":42.9589,"termPremiumPp":-6.7062,"expectedMoveFrontPct":7.1,"straddleFrontPct":null,"straddle30dPct":null,"riskReversalFrontPp":null,"riskReversal30dPp":null,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":2.861,"putCallOiFrontRatio":57.125,"putCallVolumeFrontRatio":1,"optionVolume":98,"volumeOiRatio":0.113821,"netDeltaNormalized":0.050106,"dealerDeltaNormalized":-0.049408,"gexPer100kOi":-18685670.150987,"vannaPer100kOi":1277.584204,"charmPer100kOi":2557839.721254,"weekendDeltaShiftPer100kOi":7673519.163763,"ivSurfaceRangePp":19.4,"gammaFlipDistancePct":null,"maxPainDistancePct":-12.797691,"peakCallDistancePct":8.251143,"peakPutDistancePct":-15.804667},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/NPO.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."}