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Stockfacts

EOD US-equity data for investors and AI agents

Data is end-of-day, not real-time, and not investment advice

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COST short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float1.7%440,775,000 float shares
Days to Cover3.82,042,482 average daily volume
Open Short Position7,655,966Costco Wholesale Corporation C
Change vs Previous+698,302+10.0%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20267,655,966+698,302+10.0%3.81.7%
Jul 15, 20266,957,664-327,228-4.5%2.81.6%
Jun 30, 20267,284,892-552,994-7.1%2.41.7%

Short interest is an open-position snapshot published twice monthly. It is not daily short-sale volume.

Daily off-exchange short volume

FINRA-reported short-sale transaction flow for the last 30 calendar days.

Trade DateShort VolumeShort ExemptFINRA TotalShort Volume %Facilities
Aug 21, 2026258,424893656,64139.4%3
Aug 20, 2026442,378210911,31148.5%3
Aug 19, 2026272,892331554,91049.2%3
Aug 18, 2026232,0442,683550,16942.2%3
Aug 17, 2026176,688625432,94040.8%3
Aug 14, 2026140,014930381,52836.7%3
Aug 13, 2026173,754138453,07238.4%3
Aug 12, 2026185,710287486,59938.2%3
Aug 11, 2026229,43554632,84136.3%3
Aug 10, 2026181,301594500,24136.2%3
Aug 7, 2026176,817952491,49336.0%3
Aug 6, 2026273,537137602,44345.4%3
Aug 5, 2026247,29434671,34136.8%3
Aug 4, 2026280,2492,145644,74643.5%3
Aug 3, 2026323,22240654,41149.4%3
Jul 31, 2026301,231634599,72750.2%3
Jul 30, 2026335,9173,434601,32155.9%3
Jul 29, 2026256,059235602,17442.5%3
Jul 28, 2026287,619480844,51334.1%3
Jul 27, 2026236,455423711,20733.2%3
Jul 24, 2026144,718361557,38826.0%3

Daily short volume is transaction flow reported through FINRA facilities. It does not measure open short positions and is not consolidated exchange-wide volume.