{"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/HPE","markdown_url":"https://halfonadouble.com/stock/HPE.md","history_url":"https://halfonadouble.com/api/v1/history/HPE.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/HPE.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":"HPE","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":69.3499984741211,"previous_close":64.58999633789062,"delta_neutral":55.71131881584473,"gamma_neutral":54.776185836529024,"gamma_max":67.54314983369939,"total_open_interest":563132,"previous_open_interest":606250,"listed_contracts":607,"listed_calls":443,"listed_puts":401,"gamma_max_distance_pct":-2.605405450868115,"delta_neutral_distance_pct":-19.66644550593008,"gamma_neutral_distance_pct":-21.014870884287745,"open_interest_change_1d_pct":-7.112247422680412,"call_open_interest":312022,"put_open_interest":251110,"put_call_open_interest_ratio":0.8047829960707898,"nearest_expiration_max_pain":60,"nearest_expiration_max_pain_expiry":"2026-10-09","nearest_expiration_max_pain_distance_pct":-13.482334073316778,"all_expiration_max_pain":50,"net_gamma_exposure":19739300.891501922,"net_gamma_exposure_per_100k_open_interest":3505270.6810307214,"gamma_exposure_flip":54.776185836529024,"gamma_exposure_flip_distance_pct":-21.014870884287745,"call_wall":70,"call_wall_distance_pct":0.9372769144637592,"put_wall":55,"put_wall_distance_pct":-20.692139567207047,"gamma_max_cross_direction":"above","delta_neutral_cross_direction":null,"open_interest_rank":184},"history_summary":{"first_date":"2020-12-01","last_date":"2026-10-02","session_count":1394,"trailing_window_sessions":252,"sessions_above_gamma_max_pct":10.317460317460316,"gamma_max_cross_count":25,"delta_neutral_cross_count":14,"gamma_max_prior_sessions_closer_pct":23.809523809523807,"gamma_max_prior_comparison_sessions":252,"delta_neutral_prior_sessions_closer_pct":98.01587301587301,"delta_neutral_prior_comparison_sessions":252,"open_interest_percentile_1y":60.317460317460316,"open_interest_change_1d_contracts":-43118,"open_interest_change_z_252":-0.9272017707764831,"open_interest_change_z_comparison_sessions":252,"open_interest_change_5_sessions_pct":7.246078722642473,"open_interest_change_21_sessions_pct":-8.763902952731986,"call_put_open_interest_changes":{"one_session":{"call_change_contracts":-32993,"put_change_contracts":-10125,"call_growth_pct":-9.562772633073923,"put_growth_pct":-3.875820621279691,"call_minus_put_growth_pp":-5.686952011794232},"five_sessions":{"call_change_contracts":22207,"put_change_contracts":15841,"call_growth_pct":7.662474337077101,"put_growth_pct":6.73314376309671,"call_minus_put_growth_pp":0.9293305739803905},"call_change_surprise":{"z_score":-1.1848535716943651,"comparison_sessions":252},"put_change_surprise":{"z_score":-0.500786261747781,"comparison_sessions":252},"call_minus_put_growth_surprise":{"z_score":-1.3813842778677219,"comparison_sessions":252}}},"advanced_options":{"data_through":"2026-10-02","analysis_coverage":1,"catalyst_score":62.30297230378408,"directional_score":0.5118110236220517,"catalyst_reasons":["volume/OI 0.16","front IV premium -0.4 pp","IV rank 88"],"features":{"symbol":"HPE","price":69.35,"totalOi":617388,"analysisCoverage":1,"avgIvPct":205.7,"ivRank":88.4,"iv52wHighPct":223.3,"iv52wLowPct":71.6,"frontDte":7,"frontAtmIvPct":64.4113,"backAtmIvPct":64.7932,"termPremiumPp":-0.3819,"expectedMoveFrontPct":8.92,"straddleFrontPct":6.38,"straddle30dPct":13.88,"riskReversalFrontPp":-2.52,"riskReversal30dPp":-1.76,"butterflyFrontPp":4.17,"butterfly30dPp":1.96,"putCallOiRatio":0.765,"putCallOiFrontRatio":0.889,"putCallVolumeFrontRatio":0.629,"optionVolume":99489,"volumeOiRatio":0.161145,"netDeltaNormalized":0.357299,"dealerDeltaNormalized":-0.355472,"gexPer100kOi":5029341.948661,"vannaPer100kOi":69.64826,"charmPer100kOi":-2277543.78122,"weekendDeltaShiftPer100kOi":-6832631.343661,"ivSurfaceRangePp":97.7,"gammaFlipDistancePct":-50.252343,"maxPainDistancePct":-27.901947,"peakCallDistancePct":0.937275,"peakPutDistancePct":-20.692141},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/HPE.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":37,"completed_path_count":36,"latest_cross_date":"2026-10-02","horizons":[{"sessions":1,"sample_size":36,"median_return_pct":0.21176506491268343,"p25_return_pct":-1.3472530970712937,"p75_return_pct":1.4049472260008466,"above_zero_pct":50,"median_interval_low_pct":-0.879247498393676,"median_interval_high_pct":0.7407435664424256,"median_interval_nominal_coverage_pct":93.47546647768468,"confidence_floor_pct":0},{"sessions":3,"sample_size":36,"median_return_pct":-0.49241009960307447,"p25_return_pct":-2.376268257854197,"p75_return_pct":2.9378392057577973,"above_zero_pct":44.44444444444444,"median_interval_low_pct":-1.990137719718188,"median_interval_high_pct":1.608827415505809,"median_interval_nominal_coverage_pct":93.47546647768468,"confidence_floor_pct":0},{"sessions":5,"sample_size":36,"median_return_pct":-0.09416503981439783,"p25_return_pct":-2.712515434630411,"p75_return_pct":4.344559580281571,"above_zero_pct":50,"median_interval_low_pct":-2.1742607035004635,"median_interval_high_pct":1.4276817723305468,"median_interval_nominal_coverage_pct":93.47546647768468,"confidence_floor_pct":0},{"sessions":10,"sample_size":36,"median_return_pct":1.025887842627904,"p25_return_pct":-1.6882400428324507,"p75_return_pct":6.108143756203221,"above_zero_pct":61.111111111111114,"median_interval_low_pct":-0.5247822425059834,"median_interval_high_pct":4.570136703385264,"median_interval_nominal_coverage_pct":93.47546647768468,"confidence_floor_pct":0}]},{"direction":"below","event_count":36,"completed_path_count":36,"latest_cross_date":"2026-09-18","horizons":[{"sessions":1,"sample_size":36,"median_return_pct":-0.0022848201472303042,"p25_return_pct":-1.1823587615225533,"p75_return_pct":1.3182155152493047,"above_zero_pct":50,"median_interval_low_pct":-1.0451074305181662,"median_interval_high_pct":0.8009924324207329,"median_interval_nominal_coverage_pct":93.47546647768468,"confidence_floor_pct":0},{"sessions":3,"sample_size":36,"median_return_pct":0.5039046086883769,"p25_return_pct":-1.7841938542243585,"p75_return_pct":2.280843561057594,"above_zero_pct":58.333333333333336,"median_interval_low_pct":-0.7417374055505688,"median_interval_high_pct":1.7874906716064398,"median_interval_nominal_coverage_pct":93.47546647768468,"confidence_floor_pct":0},{"sessions":5,"sample_size":36,"median_return_pct":1.3338494655906086,"p25_return_pct":-1.7588942947049908,"p75_return_pct":4.450587532776195,"above_zero_pct":58.333333333333336,"median_interval_low_pct":-1.14777509741526,"median_interval_high_pct":2.5932883166092546,"median_interval_nominal_coverage_pct":93.47546647768468,"confidence_floor_pct":0},{"sessions":10,"sample_size":36,"median_return_pct":1.2513002646740157,"p25_return_pct":-1.2378930924000415,"p75_return_pct":6.933316817106544,"above_zero_pct":58.333333333333336,"median_interval_low_pct":-0.6347615413687002,"median_interval_high_pct":4.000002997262131,"median_interval_nominal_coverage_pct":93.47546647768468,"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."}