{"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/SPOT","markdown_url":"https://halfonadouble.com/stock/SPOT.md","history_url":"https://halfonadouble.com/api/v1/history/SPOT.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/SPOT.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":"SPOT","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":530.4600219726562,"previous_close":533.3699951171875,"delta_neutral":504.96334185029514,"gamma_neutral":498.6628226326246,"gamma_max":597.0316649532996,"total_open_interest":103289,"previous_open_interest":130244,"listed_contracts":1278,"listed_calls":747,"listed_puts":700,"gamma_max_distance_pct":12.549794560027166,"delta_neutral_distance_pct":-4.806522464698649,"gamma_neutral_distance_pct":-5.994268752202156,"open_interest_change_1d_pct":-20.695771014403736,"call_open_interest":51687,"put_open_interest":51602,"put_call_open_interest_ratio":0.9983554859055469,"nearest_expiration_max_pain":510,"nearest_expiration_max_pain_expiry":"2026-10-23","nearest_expiration_max_pain_distance_pct":-3.8570337301895496,"all_expiration_max_pain":520,"net_gamma_exposure":2152525.654910989,"net_gamma_exposure_per_100k_open_interest":2083983.4395831008,"gamma_exposure_flip":498.6628226326246,"gamma_exposure_flip_distance_pct":-5.994268752202156,"call_wall":575,"call_wall_distance_pct":8.396481578707862,"put_wall":500,"put_wall_distance_pct":-5.742189931558382,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":600},"history_summary":{"first_date":"2020-12-01","last_date":"2026-10-16","session_count":1404,"trailing_window_sessions":252,"sessions_above_gamma_max_pct":0.3968253968253968,"gamma_max_cross_count":2,"delta_neutral_cross_count":33,"gamma_max_prior_sessions_closer_pct":45.63492063492063,"gamma_max_prior_comparison_sessions":252,"delta_neutral_prior_sessions_closer_pct":69.44444444444444,"delta_neutral_prior_comparison_sessions":252,"open_interest_percentile_1y":1.984126984126984,"open_interest_change_1d_contracts":-26955,"open_interest_change_z_252":-2.347237006413146,"open_interest_change_z_comparison_sessions":252,"open_interest_change_5_sessions_pct":-16.82048060816905,"open_interest_change_21_sessions_pct":-16.795018447211973,"call_put_open_interest_changes":{"one_session":{"call_change_contracts":-16651,"put_change_contracts":-10304,"call_growth_pct":-24.365653077350817,"put_growth_pct":-16.644590185119373,"call_minus_put_growth_pp":-7.721062892231444},"five_sessions":{"call_change_contracts":-13810,"put_change_contracts":-7077,"call_growth_pct":-21.084935187871203,"put_growth_pct":-12.060532728914945,"call_minus_put_growth_pp":-9.024402458956258},"call_change_surprise":{"z_score":-2.66685838495531,"comparison_sessions":252},"put_change_surprise":{"z_score":-1.8677646993012131,"comparison_sessions":252},"call_minus_put_growth_surprise":{"z_score":-2.711578614534392,"comparison_sessions":252}}},"advanced_options":{"data_through":"2026-10-16","analysis_coverage":1,"catalyst_score":54.00283512780441,"directional_score":-3.917053473209741,"catalyst_reasons":["front IV premium 47.1 pp"],"features":{"price":530.46,"totalOi":132488,"analysisCoverage":1,"avgIvPct":123.2,"ivRank":82.8,"iv52wHighPct":137.5,"iv52wLowPct":54.6,"frontDte":7,"termPremiumPp":47.105,"riskReversalFrontPp":0.31,"riskReversal30dPp":0.81,"butterflyFrontPp":-3.23,"butterfly30dPp":0.09,"putCallOiRatio":0.892,"putCallOiFrontRatio":0.489,"putCallVolumeFrontRatio":1.356,"optionVolume":4853,"volumeOiRatio":0.03663,"netDeltaNormalized":0.05921,"dealerDeltaNormalized":-0.056651,"gexPer100kOi":20376983.998551,"vannaPer100kOi":3284.07101,"charmPer100kOi":-17537899.281444,"weekendDeltaShiftPer100kOi":-52613697.089548,"ivSurfaceRangePp":121,"gammaFlipDistancePct":4.513064,"maxPainDistancePct":-3.85703,"peakCallDistancePct":13.109377,"peakPutDistancePct":-3.85703},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/SPOT.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":23,"completed_path_count":23,"latest_cross_date":"2026-08-19","horizons":[{"sessions":1,"sample_size":23,"median_return_pct":0.1557299430500425,"p25_return_pct":-1.3716035948290795,"p75_return_pct":1.4434900126214512,"above_zero_pct":56.52173913043478,"median_interval_low_pct":-0.44642221286240735,"median_interval_high_pct":0.7601443760137716,"median_interval_nominal_coverage_pct":90.68603515625,"confidence_floor_pct":0},{"sessions":3,"sample_size":23,"median_return_pct":0.8816473209299902,"p25_return_pct":-2.114262855758131,"p75_return_pct":4.13382381383779,"above_zero_pct":65.21739130434783,"median_interval_low_pct":-1.712398584584074,"median_interval_high_pct":3.344009119857616,"median_interval_nominal_coverage_pct":90.68603515625,"confidence_floor_pct":0},{"sessions":5,"sample_size":23,"median_return_pct":1.3003001554062088,"p25_return_pct":-2.498300987683338,"p75_return_pct":3.363010684675649,"above_zero_pct":65.21739130434783,"median_interval_low_pct":-1.5004967759424725,"median_interval_high_pct":3.084450431911878,"median_interval_nominal_coverage_pct":90.68603515625,"confidence_floor_pct":0},{"sessions":10,"sample_size":23,"median_return_pct":0.1716462720877443,"p25_return_pct":-5.1632250633106,"p75_return_pct":8.124160231529098,"above_zero_pct":52.17391304347826,"median_interval_low_pct":-4.256797989589279,"median_interval_high_pct":4.872788209367629,"median_interval_nominal_coverage_pct":90.68603515625,"confidence_floor_pct":0}]},{"direction":"below","event_count":22,"completed_path_count":22,"latest_cross_date":"2026-08-20","horizons":[{"sessions":1,"sample_size":22,"median_return_pct":0.34231775096779105,"p25_return_pct":-0.6494673174355092,"p75_return_pct":1.9133211127398908,"above_zero_pct":59.09090909090909,"median_interval_low_pct":-0.5554350618663606,"median_interval_high_pct":1.444251899352178,"median_interval_nominal_coverage_pct":94.75212097167969,"confidence_floor_pct":0},{"sessions":3,"sample_size":22,"median_return_pct":1.7996806154717104,"p25_return_pct":-1.071795793833838,"p75_return_pct":3.784914817297358,"above_zero_pct":63.63636363636363,"median_interval_low_pct":-0.6371684857482074,"median_interval_high_pct":3.646390610800343,"median_interval_nominal_coverage_pct":94.75212097167969,"confidence_floor_pct":0},{"sessions":5,"sample_size":22,"median_return_pct":0.754511575740413,"p25_return_pct":-1.6831513171009367,"p75_return_pct":3.0315186259957327,"above_zero_pct":54.54545454545454,"median_interval_low_pct":-1.424081213187156,"median_interval_high_pct":2.2473779121066517,"median_interval_nominal_coverage_pct":94.75212097167969,"confidence_floor_pct":0},{"sessions":10,"sample_size":22,"median_return_pct":0.2264689706400591,"p25_return_pct":-2.803922707891135,"p75_return_pct":6.526148519555358,"above_zero_pct":50,"median_interval_low_pct":-2.051907288722521,"median_interval_high_pct":5.0522381617808865,"median_interval_nominal_coverage_pct":94.75212097167969,"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."}