{"schema_version":1,"publisher":"Half on a Double","data_through":"2026-10-16","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=2026-10-16&public_schema=4","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":14.09000015258789,"previous_close":15.100000381469727,"delta_neutral":11.142014203207294,"gamma_neutral":3.7463493791862605,"gamma_max":16.148281181133008,"total_open_interest":14164,"previous_open_interest":17089,"listed_contracts":78,"listed_calls":60,"listed_puts":38,"gamma_max_distance_pct":14.608097986195379,"delta_neutral_distance_pct":-20.922540223245804,"gamma_neutral_distance_pct":-73.41128929300847,"open_interest_change_1d_pct":-17.116273626309322,"call_open_interest":12572,"put_open_interest":1592,"put_call_open_interest_ratio":0.12663060769965,"nearest_expiration_max_pain":13,"nearest_expiration_max_pain_expiry":"2026-11-20","nearest_expiration_max_pain_distance_pct":-7.735983965817714,"all_expiration_max_pain":12,"net_gamma_exposure":1020038.2786612207,"net_gamma_exposure_per_100k_open_interest":7201625.8024655515,"gamma_exposure_flip":3.7463493791862605,"gamma_exposure_flip_distance_pct":-73.41128929300847,"call_wall":17,"call_wall_distance_pct":20.652944044699915,"put_wall":13,"put_wall_distance_pct":-7.735983965817714,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":1695},"history_summary":null,"advanced_options":{"data_through":"2026-10-16","analysis_coverage":1,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"price":14.09,"totalOi":17090,"analysisCoverage":1,"avgIvPct":660.1,"ivRank":100,"iv52wHighPct":660.1,"iv52wLowPct":61.31,"frontDte":35,"termPremiumPp":0,"riskReversalFrontPp":-132.21,"riskReversal30dPp":-132.21,"butterflyFrontPp":-48.37,"butterfly30dPp":-48.37,"putCallOiRatio":0.143,"putCallOiFrontRatio":0.21,"putCallVolumeFrontRatio":0.368,"optionVolume":120,"volumeOiRatio":0.007022,"netDeltaNormalized":0.230104,"dealerDeltaNormalized":-0.23009,"gexPer100kOi":935372.38151,"vannaPer100kOi":1995.3189,"charmPer100kOi":-99906.377999,"weekendDeltaShiftPer100kOi":-299724.985372,"ivSurfaceRangePp":119.3,"gammaFlipDistancePct":10.432931,"maxPainDistancePct":-7.735983,"peakCallDistancePct":6.458481,"peakPutDistancePct":-14.833215},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GRND.json?date=2026-10-16&public_schema=4","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."}