{"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/ATEC","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/ATEC.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/ATEC.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":"ATEC","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":10.460000038146973,"previous_close":10.930000305175781,"delta_neutral":8.576237538109895,"gamma_neutral":5.471637207761152,"gamma_max":11.142192613345744,"total_open_interest":13974,"previous_open_interest":16171,"listed_contracts":50,"listed_calls":44,"listed_puts":25,"gamma_max_distance_pct":6.521917521136299,"delta_neutral_distance_pct":-18.009201655517327,"gamma_neutral_distance_pct":-47.68989304200354,"open_interest_change_1d_pct":-13.586049100241175,"call_open_interest":11243,"put_open_interest":2731,"put_call_open_interest_ratio":0.24290669750066707,"nearest_expiration_max_pain":10,"nearest_expiration_max_pain_expiry":"2026-11-20","nearest_expiration_max_pain_distance_pct":-4.3977058935887285,"all_expiration_max_pain":7.5,"net_gamma_exposure":642054.8610102795,"net_gamma_exposure_per_100k_open_interest":4594639.051168452,"gamma_exposure_flip":5.471637207761152,"gamma_exposure_flip_distance_pct":-47.68989304200354,"call_wall":12.5,"call_wall_distance_pct":19.50286763301409,"put_wall":15,"put_wall_distance_pct":43.403441159616904,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":1705},"history_summary":null,"advanced_options":{"data_through":"2026-10-16","analysis_coverage":0.9444,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"price":10.46,"totalOi":16168,"analysisCoverage":0.9444,"avgIvPct":3884.7,"ivRank":100,"iv52wHighPct":3884.7,"iv52wLowPct":105.61,"frontDte":35,"termPremiumPp":20.9355,"riskReversalFrontPp":50.18,"riskReversal30dPp":50.18,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.302,"putCallOiFrontRatio":0.076,"putCallVolumeFrontRatio":0.003,"optionVolume":1228,"volumeOiRatio":0.075952,"netDeltaNormalized":0.320155,"dealerDeltaNormalized":-0.320114,"gexPer100kOi":532212.580406,"vannaPer100kOi":432.953983,"charmPer100kOi":-73620.732311,"weekendDeltaShiftPer100kOi":-220862.196932,"ivSurfaceRangePp":66.5,"gammaFlipDistancePct":null,"maxPainDistancePct":-28.298279,"peakCallDistancePct":19.502868,"peakPutDistancePct":-4.397706},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/ATEC.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."}