{"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/GRND","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/GRND.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/GRND.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":"GRND","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":13.430000305175781,"previous_close":14.170000076293945,"delta_neutral":11.426708151332477,"gamma_neutral":13.430000305175781,"gamma_max":16.711209774043827,"total_open_interest":14570,"previous_open_interest":13923,"listed_contracts":81,"listed_calls":62,"listed_puts":41,"gamma_max_distance_pct":24.431938900280603,"delta_neutral_distance_pct":-14.916545854963656,"gamma_neutral_distance_pct":0,"open_interest_change_1d_pct":4.646986999928177,"call_open_interest":12585,"put_open_interest":1985,"put_call_open_interest_ratio":0.1577274533174414,"nearest_expiration_max_pain":15,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":11.69024318055419,"all_expiration_max_pain":13,"net_gamma_exposure":789559.0473426908,"net_gamma_exposure_per_100k_open_interest":5419073.763505084,"gamma_exposure_flip":null,"gamma_exposure_flip_distance_pct":null,"call_wall":17,"call_wall_distance_pct":26.58227560462808,"put_wall":15,"put_wall_distance_pct":11.69024318055419,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":1799},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.9444,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"GRND","price":13.43,"totalOi":14570,"analysisCoverage":0.9444,"avgIvPct":117.8,"ivRank":100,"iv52wHighPct":117.8,"iv52wLowPct":61.31,"frontDte":14,"frontAtmIvPct":50.8049,"backAtmIvPct":51.174,"termPremiumPp":-0.3691,"expectedMoveFrontPct":9.95,"straddleFrontPct":6.89,"straddle30dPct":6.89,"riskReversalFrontPp":-140.71,"riskReversal30dPp":-140.71,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.158,"putCallOiFrontRatio":0.229,"putCallVolumeFrontRatio":0.293,"optionVolume":518,"volumeOiRatio":0.035553,"netDeltaNormalized":0.189838,"dealerDeltaNormalized":-0.188693,"gexPer100kOi":758408.236102,"vannaPer100kOi":2772.820865,"charmPer100kOi":-749087.165408,"weekendDeltaShiftPer100kOi":-2247254.632807,"ivSurfaceRangePp":133.5,"gammaFlipDistancePct":-30.975428,"maxPainDistancePct":-3.201787,"peakCallDistancePct":4.244229,"peakPutDistancePct":-3.201787},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GRND.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."}