{"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/TNA","markdown_url":"https://halfonadouble.com/stock/TNA.md","history_url":"https://halfonadouble.com/api/v1/history/TNA.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/TNA.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":"TNA","page_tier":"A","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":52.709999084472656,"previous_close":55.5099983215332,"delta_neutral":59.580561173546556,"gamma_neutral":52.709999084472656,"gamma_max":66.02126007300143,"total_open_interest":126210,"previous_open_interest":158600,"listed_contracts":840,"listed_calls":483,"listed_puts":438,"gamma_max_distance_pct":25.25376820287218,"delta_neutral_distance_pct":13.03464657258519,"gamma_neutral_distance_pct":0,"open_interest_change_1d_pct":-20.422446406052963,"call_open_interest":58968,"put_open_interest":67242,"put_call_open_interest_ratio":1.1403133903133904,"nearest_expiration_max_pain":56,"nearest_expiration_max_pain_expiry":"2026-10-23","nearest_expiration_max_pain_distance_pct":6.241701712524814,"all_expiration_max_pain":60,"net_gamma_exposure":-1593953.214649158,"net_gamma_exposure_per_100k_open_interest":-1262937.3382847304,"gamma_exposure_flip":null,"gamma_exposure_flip_distance_pct":null,"call_wall":50,"call_wall_distance_pct":-5.1413377566742735,"put_wall":55,"put_wall_distance_pct":4.3445284676583,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":525},"history_summary":{"first_date":"2020-12-01","last_date":"2026-10-16","session_count":1404,"trailing_window_sessions":252,"sessions_above_gamma_max_pct":2.7777777777777777,"gamma_max_cross_count":12,"delta_neutral_cross_count":29,"gamma_max_prior_sessions_closer_pct":96.42857142857143,"gamma_max_prior_comparison_sessions":252,"delta_neutral_prior_sessions_closer_pct":88.4920634920635,"delta_neutral_prior_comparison_sessions":252,"open_interest_percentile_1y":16.666666666666664,"open_interest_change_1d_contracts":-32390,"open_interest_change_z_252":-1.6849186298597323,"open_interest_change_z_comparison_sessions":252,"open_interest_change_5_sessions_pct":-9.075190732455855,"open_interest_change_21_sessions_pct":-10.875567575965144,"call_put_open_interest_changes":{"one_session":{"call_change_contracts":-15328,"put_change_contracts":-17062,"call_growth_pct":-20.630989555292345,"put_growth_pct":-20.238660087303092,"call_minus_put_growth_pp":-0.39232946798925283},"five_sessions":{"call_change_contracts":-5034,"put_change_contracts":-7563,"call_growth_pct":-7.865379206899785,"put_growth_pct":-10.1102867455384,"call_minus_put_growth_pp":2.244907538638614},"call_change_surprise":{"z_score":-1.3733570309448828,"comparison_sessions":252},"put_change_surprise":{"z_score":-1.941514290702117,"comparison_sessions":252},"call_minus_put_growth_surprise":{"z_score":-0.013890673378033081,"comparison_sessions":252}}},"advanced_options":{"data_through":"2026-10-16","analysis_coverage":1,"catalyst_score":53.24669022494092,"directional_score":-37.39059858871508,"catalyst_reasons":["volume/OI 0.19","25Δ risk reversal 17.9 pp"],"features":{"price":52.71,"totalOi":160674,"analysisCoverage":1,"avgIvPct":178.7,"ivRank":82.9,"iv52wHighPct":201.3,"iv52wLowPct":68.9,"frontDte":7,"termPremiumPp":0.1203,"riskReversalFrontPp":17.86,"riskReversal30dPp":15.19,"butterflyFrontPp":3.8,"butterfly30dPp":8.9,"putCallOiRatio":1.084,"putCallOiFrontRatio":0.711,"putCallVolumeFrontRatio":1.109,"optionVolume":30600,"volumeOiRatio":0.190448,"netDeltaNormalized":-0.11585,"dealerDeltaNormalized":0.115505,"gexPer100kOi":-2845954.653522,"vannaPer100kOi":424.461954,"charmPer100kOi":542645.356436,"weekendDeltaShiftPer100kOi":1627936.069308,"ivSurfaceRangePp":153.7,"gammaFlipDistancePct":null,"maxPainDistancePct":10.036046,"peakCallDistancePct":6.2417,"peakPutDistancePct":4.344527},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/TNA.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":[{"direction":"above","event_count":42,"completed_path_count":42,"latest_cross_date":"2026-08-04","horizons":[{"sessions":1,"sample_size":42,"median_return_pct":0.014985493630503832,"p25_return_pct":-2.354150545526995,"p75_return_pct":1.8693019927035592,"above_zero_pct":50,"median_interval_low_pct":-1.1429653786017457,"median_interval_high_pct":1.4594816101170194,"median_interval_nominal_coverage_pct":91.15704530122457,"confidence_floor_pct":0},{"sessions":3,"sample_size":42,"median_return_pct":-0.7023896727607892,"p25_return_pct":-3.038795685955789,"p75_return_pct":2.8707647492228148,"above_zero_pct":45.23809523809524,"median_interval_low_pct":-1.912436094944303,"median_interval_high_pct":0.6818557128373648,"median_interval_nominal_coverage_pct":91.15704530122457,"confidence_floor_pct":0},{"sessions":5,"sample_size":42,"median_return_pct":-0.6392533193333327,"p25_return_pct":-6.3177799970695645,"p75_return_pct":4.204402751445658,"above_zero_pct":47.61904761904761,"median_interval_low_pct":-2.9688856336805514,"median_interval_high_pct":2.585379725230985,"median_interval_nominal_coverage_pct":91.15704530122457,"confidence_floor_pct":0},{"sessions":10,"sample_size":42,"median_return_pct":1.5603822136272982,"p25_return_pct":-4.746619847842365,"p75_return_pct":8.38857584854873,"above_zero_pct":52.38095238095239,"median_interval_low_pct":-1.7028951782244839,"median_interval_high_pct":5.195485464512206,"median_interval_nominal_coverage_pct":91.15704530122457,"confidence_floor_pct":0}]},{"direction":"below","event_count":41,"completed_path_count":41,"latest_cross_date":"2026-08-05","horizons":[{"sessions":1,"sample_size":41,"median_return_pct":-0.8064516129032251,"p25_return_pct":-2.32931699836022,"p75_return_pct":1.1895366874586921,"above_zero_pct":41.46341463414634,"median_interval_low_pct":-1.7889087168218576,"median_interval_high_pct":0.4166662527455456,"median_interval_nominal_coverage_pct":94.04161119819037,"confidence_floor_pct":0},{"sessions":3,"sample_size":41,"median_return_pct":0.013608348612881294,"p25_return_pct":-3.3862965817370694,"p75_return_pct":3.6774173859627,"above_zero_pct":51.21951219512195,"median_interval_low_pct":-2.076860876652964,"median_interval_high_pct":1.5831979290446663,"median_interval_nominal_coverage_pct":94.04161119819037,"confidence_floor_pct":0},{"sessions":5,"sample_size":41,"median_return_pct":-0.025772058429640587,"p25_return_pct":-3.37328999303953,"p75_return_pct":4.362608920145639,"above_zero_pct":48.78048780487805,"median_interval_low_pct":-2.2831115752044884,"median_interval_high_pct":2.734696783987034,"median_interval_nominal_coverage_pct":94.04161119819037,"confidence_floor_pct":0},{"sessions":10,"sample_size":41,"median_return_pct":1.5014238114705147,"p25_return_pct":-3.443477904331127,"p75_return_pct":5.777394435468586,"above_zero_pct":60.97560975609756,"median_interval_low_pct":-0.34999847412109375,"median_interval_high_pct":3.7875275255080387,"median_interval_nominal_coverage_pct":94.04161119819037,"confidence_floor_pct":0}]}],"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."}