{"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/GRMN","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/GRMN.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/GRMN.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":"GRMN","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":281.1600036621094,"previous_close":282.4700012207031,"delta_neutral":249.66438688770995,"gamma_neutral":229.77540905252874,"gamma_max":301.04792790927195,"total_open_interest":11141,"previous_open_interest":11106,"listed_contracts":259,"listed_calls":184,"listed_puts":130,"gamma_max_distance_pct":7.073525390568479,"delta_neutral_distance_pct":-11.20202602225387,"gamma_neutral_distance_pct":-18.275926141804035,"open_interest_change_1d_pct":0.31514496668467495,"call_open_interest":7210,"put_open_interest":3931,"put_call_open_interest_ratio":0.5452149791955617,"nearest_expiration_max_pain":260,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":-7.525965068466461,"all_expiration_max_pain":250,"net_gamma_exposure":697971.9214088479,"net_gamma_exposure_per_100k_open_interest":6264894.725867049,"gamma_exposure_flip":229.77540905252874,"gamma_exposure_flip_distance_pct":-18.275926141804035,"call_wall":290,"call_wall_distance_pct":3.144115885172024,"put_wall":260,"put_wall_distance_pct":-7.525965068466461,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":2007},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":1,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"GRMN","price":281.16,"totalOi":11141,"analysisCoverage":1,"avgIvPct":44.3,"ivRank":52.9,"iv52wHighPct":51.96,"iv52wLowPct":35.7,"frontDte":14,"frontAtmIvPct":28.2873,"backAtmIvPct":40.448,"termPremiumPp":-12.1607,"expectedMoveFrontPct":5.54,"straddleFrontPct":4.43,"straddle30dPct":4.43,"riskReversalFrontPp":-0.28,"riskReversal30dPp":-0.28,"butterflyFrontPp":-1.87,"butterfly30dPp":-1.87,"putCallOiRatio":0.545,"putCallOiFrontRatio":0.897,"putCallVolumeFrontRatio":0.429,"optionVolume":107,"volumeOiRatio":0.009604,"netDeltaNormalized":0.267424,"dealerDeltaNormalized":-0.267352,"gexPer100kOi":18543657.930168,"vannaPer100kOi":-188.492954,"charmPer100kOi":-2831648.864554,"weekendDeltaShiftPer100kOi":-8494937.617808,"ivSurfaceRangePp":72.7,"gammaFlipDistancePct":-57.0138,"maxPainDistancePct":-11.082658,"peakCallDistancePct":3.144117,"peakPutDistancePct":-11.082658},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GRMN.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."}