{"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/BLFS","markdown_url":null,"history_url":"https://halfonadouble.com/api/v1/history/BLFS.csv","advanced_analysis_url":"https://halfonadouble.com/api/v1/analysis/BLFS.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":"BLFS","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":37.29999923706055,"previous_close":36.779998779296875,"delta_neutral":24.945612196399367,"gamma_neutral":13.686740720479701,"gamma_max":37.366353689477975,"total_open_interest":288,"previous_open_interest":288,"listed_contracts":23,"listed_calls":23,"listed_puts":6,"gamma_max_distance_pct":0.17789397794812808,"delta_neutral_distance_pct":-33.1216817516342,"gamma_neutral_distance_pct":-63.30632439562941,"open_interest_change_1d_pct":0,"call_open_interest":268,"put_open_interest":20,"put_call_open_interest_ratio":0.07462686567164178,"nearest_expiration_max_pain":10,"nearest_expiration_max_pain_expiry":"2026-10-16","nearest_expiration_max_pain_distance_pct":-73.19034797710077,"all_expiration_max_pain":30,"net_gamma_exposure":44616.33106845213,"net_gamma_exposure_per_100k_open_interest":15491781.620990321,"gamma_exposure_flip":13.686740720479701,"gamma_exposure_flip_distance_pct":-63.30632439562941,"call_wall":40,"call_wall_distance_pct":7.238608091596917,"put_wall":35,"put_wall_distance_pct":-6.166217919852698,"gamma_max_cross_direction":"below","delta_neutral_cross_direction":null,"open_interest_rank":4331},"history_summary":null,"advanced_options":{"data_through":"2026-10-02","analysis_coverage":0.7222,"catalyst_score":null,"directional_score":null,"catalyst_reasons":[],"features":{"symbol":"BLFS","price":37.3,"totalOi":288,"analysisCoverage":0.7222,"avgIvPct":77,"ivRank":63.7,"iv52wHighPct":100.9,"iv52wLowPct":35,"frontDte":null,"frontAtmIvPct":null,"backAtmIvPct":null,"termPremiumPp":null,"expectedMoveFrontPct":null,"straddleFrontPct":null,"straddle30dPct":null,"riskReversalFrontPp":null,"riskReversal30dPp":null,"butterflyFrontPp":null,"butterfly30dPp":null,"putCallOiRatio":0.075,"putCallOiFrontRatio":0.018,"putCallVolumeFrontRatio":0,"optionVolume":6,"volumeOiRatio":0.020833,"netDeltaNormalized":0.511307,"dealerDeltaNormalized":-0.502431,"gexPer100kOi":6179680.555556,"vannaPer100kOi":1388.888889,"charmPer100kOi":0,"weekendDeltaShiftPer100kOi":0,"ivSurfaceRangePp":32.5,"gammaFlipDistancePct":null,"maxPainDistancePct":-19.571046,"peakCallDistancePct":7.238606,"peakPutDistancePct":null},"complete_analysis_url":"https://halfonadouble.com/api/v1/analysis/BLFS.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":[],"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."}