{"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/GDXJ","markdown_url":"https://halfonadouble.com/stock/GDXJ.md","history_url":"https://halfonadouble.com/api/v1/history/GDXJ.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/GDXJ.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":"GDXJ","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":113.6500015258789,"previous_close":112.45999908447266,"delta_neutral":112.54160587294103,"gamma_neutral":118.50142426727444,"gamma_max":145.27592624601505,"total_open_interest":207506,"previous_open_interest":216339,"listed_contracts":1114,"listed_calls":723,"listed_puts":527,"gamma_max_distance_pct":27.827474083169896,"delta_neutral_distance_pct":-0.9752711289541716,"gamma_neutral_distance_pct":4.268739706343809,"open_interest_change_1d_pct":-4.082943898233791,"call_open_interest":123621,"put_open_interest":83885,"put_call_open_interest_ratio":0.6785659394439456,"nearest_expiration_max_pain":120.5,"nearest_expiration_max_pain_expiry":"2026-10-09","nearest_expiration_max_pain_distance_pct":6.02727530325752,"all_expiration_max_pain":110,"net_gamma_exposure":-1917517.150099372,"net_gamma_exposure_per_100k_open_interest":-924077.9303246036,"gamma_exposure_flip":118.50142426727444,"gamma_exposure_flip_distance_pct":4.268739706343809,"call_wall":145,"call_wall_distance_pct":27.584688124251787,"put_wall":120,"put_wall_distance_pct":5.587328102829066,"gamma_max_cross_direction":null,"delta_neutral_cross_direction":null,"open_interest_rank":397},"history_summary":{"first_date":"2020-12-01","last_date":"2026-10-02","session_count":1394,"trailing_window_sessions":252,"sessions_above_gamma_max_pct":1.5873015873015872,"gamma_max_cross_count":6,"delta_neutral_cross_count":18,"gamma_max_prior_sessions_closer_pct":92.46031746031747,"gamma_max_prior_comparison_sessions":252,"delta_neutral_prior_sessions_closer_pct":6.746031746031746,"delta_neutral_prior_comparison_sessions":252,"open_interest_percentile_1y":73.80952380952381,"open_interest_change_1d_contracts":-8833,"open_interest_change_z_252":-0.615193224043935,"open_interest_change_z_comparison_sessions":252,"open_interest_change_5_sessions_pct":1.298041953262679,"open_interest_change_21_sessions_pct":3.8578964754401945,"call_put_open_interest_changes":{"one_session":{"call_change_contracts":-6675,"put_change_contracts":-2158,"call_growth_pct":-5.122950819672131,"put_growth_pct":-2.50804830143068,"call_minus_put_growth_pp":-2.6149025182414514},"five_sessions":{"call_change_contracts":-880,"put_change_contracts":3539,"call_growth_pct":-0.7068216319547634,"put_growth_pct":4.404699673910338,"call_minus_put_growth_pp":-5.111521305865102},"call_change_surprise":{"z_score":-1.1427455370934259,"comparison_sessions":252},"put_change_surprise":{"z_score":-0.2144976812708852,"comparison_sessions":252},"call_minus_put_growth_surprise":{"z_score":-0.6208980033839174,"comparison_sessions":252}}},"advanced_options":{"data_through":"2026-10-02","analysis_coverage":1,"catalyst_score":56.50251476955796,"directional_score":16.61417322834645,"catalyst_reasons":["25Δ risk reversal -40.4 pp","front IV premium 0.9 pp"],"features":{"symbol":"GDXJ","price":113.65,"totalOi":218964,"analysisCoverage":1,"avgIvPct":98.4,"ivRank":83.5,"iv52wHighPct":107.5,"iv52wLowPct":52.5,"frontDte":7,"frontAtmIvPct":47.3698,"backAtmIvPct":46.4251,"termPremiumPp":0.9447,"expectedMoveFrontPct":6.56,"straddleFrontPct":4.75,"straddle30dPct":6.91,"riskReversalFrontPp":-40.37,"riskReversal30dPp":-4.24,"butterflyFrontPp":-5.75,"butterfly30dPp":-1.6,"putCallOiRatio":0.674,"putCallOiFrontRatio":1.469,"putCallVolumeFrontRatio":0.132,"optionVolume":5565,"volumeOiRatio":0.025415,"netDeltaNormalized":0.034314,"dealerDeltaNormalized":-0.033121,"gexPer100kOi":-1142790.951937,"vannaPer100kOi":3062.147202,"charmPer100kOi":610733.271223,"weekendDeltaShiftPer100kOi":1832199.813668,"ivSurfaceRangePp":86.3,"gammaFlipDistancePct":null,"maxPainDistancePct":-1.451826,"peakCallDistancePct":9.986802,"peakPutDistancePct":-3.211615},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/GDXJ.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":[{"direction":"above","event_count":15,"completed_path_count":15,"latest_cross_date":"2026-08-21","horizons":[{"sessions":1,"sample_size":15,"median_return_pct":-0.15154092189395563,"p25_return_pct":-0.7718127396328267,"p75_return_pct":0.804367713813614,"above_zero_pct":46.666666666666664,"median_interval_low_pct":-1.016949152542368,"median_interval_high_pct":0.8620686197926775,"median_interval_nominal_coverage_pct":96.484375,"confidence_floor_pct":0},{"sessions":3,"sample_size":15,"median_return_pct":-0.27321988603852265,"p25_return_pct":-1.5001555961314972,"p75_return_pct":1.1922043159302786,"above_zero_pct":40,"median_interval_low_pct":-1.576578240726978,"median_interval_high_pct":2.1656828207648138,"median_interval_nominal_coverage_pct":96.484375,"confidence_floor_pct":0},{"sessions":5,"sample_size":15,"median_return_pct":0.2626566560317345,"p25_return_pct":-2.4760607994216253,"p75_return_pct":1.3318610164391176,"above_zero_pct":53.333333333333336,"median_interval_low_pct":-2.8584307947897125,"median_interval_high_pct":1.347026848429267,"median_interval_nominal_coverage_pct":96.484375,"confidence_floor_pct":0},{"sessions":10,"sample_size":15,"median_return_pct":0.7402042757581606,"p25_return_pct":-2.544680949023875,"p75_return_pct":3.812729872417331,"above_zero_pct":53.333333333333336,"median_interval_low_pct":-2.6849669333435244,"median_interval_high_pct":4.900033119437408,"median_interval_nominal_coverage_pct":96.484375,"confidence_floor_pct":0}]},{"direction":"below","event_count":15,"completed_path_count":15,"latest_cross_date":"2026-08-24","horizons":[{"sessions":1,"sample_size":15,"median_return_pct":1.5429763045927691,"p25_return_pct":-0.4152557754478925,"p75_return_pct":2.227792186148636,"above_zero_pct":73.33333333333333,"median_interval_low_pct":-0.8547005148608622,"median_interval_high_pct":2.337059374462913,"median_interval_nominal_coverage_pct":96.484375,"confidence_floor_pct":0},{"sessions":3,"sample_size":15,"median_return_pct":-0.43001867014504924,"p25_return_pct":-2.340183056270045,"p75_return_pct":1.9773117452045685,"above_zero_pct":46.666666666666664,"median_interval_low_pct":-2.6575375909674626,"median_interval_high_pct":2.209951495209461,"median_interval_nominal_coverage_pct":96.484375,"confidence_floor_pct":0},{"sessions":5,"sample_size":15,"median_return_pct":-1.6062083114128267,"p25_return_pct":-3.9512038280603345,"p75_return_pct":1.5251815810397584,"above_zero_pct":40,"median_interval_low_pct":-4.22967618538046,"median_interval_high_pct":2.25438732649923,"median_interval_nominal_coverage_pct":96.484375,"confidence_floor_pct":0},{"sessions":10,"sample_size":15,"median_return_pct":-0.9062031104309476,"p25_return_pct":-1.9470162624985687,"p75_return_pct":2.8409777050728113,"above_zero_pct":40,"median_interval_low_pct":-2.10124413961682,"median_interval_high_pct":4.5465363005303905,"median_interval_nominal_coverage_pct":96.484375,"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."}