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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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PRME short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float31.2%112,251,000 float shares
Days to Cover12.92,714,294 average daily volume
Open Short Position35,003,578Prime Medicine, Inc. Common St
Change vs Previous+1,467,062+4.4%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 202635,003,578+1,467,062+4.4%12.931.2%
Jul 15, 202633,536,516-1,193,281-3.4%6.729.9%
Jun 30, 202634,729,797+2,195,841+6.8%9.130.9%

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, 2026487,6837,1541,494,16632.6%3
Aug 20, 20261,079,22912,0261,926,61656.0%3
Aug 19, 2026808,22012,0113,326,44824.3%3
Aug 18, 2026282,622400534,86052.8%3
Aug 17, 2026372,6582,200699,26253.3%3
Aug 14, 2026364,463700690,72652.8%3
Aug 13, 2026389,7202,000861,71645.2%3
Aug 12, 2026215,3930514,20841.9%2
Aug 11, 2026349,5680668,60652.3%3
Aug 10, 2026582,0292001,086,36253.6%3
Aug 7, 2026371,5234,983729,62550.9%3
Aug 6, 2026475,2220888,33453.5%3
Aug 5, 2026665,5507771,197,05655.6%3
Aug 4, 2026568,23201,160,62749.0%3
Aug 3, 20261,011,1696,1971,917,84452.7%3
Jul 31, 2026461,2314,999818,76456.3%3
Jul 30, 2026406,1581,200953,09542.6%3
Jul 29, 2026401,626131904,30344.4%3
Jul 28, 2026840,72101,287,14865.3%3
Jul 27, 2026569,888344981,78658.0%3
Jul 24, 2026725,432100928,42578.1%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.