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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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DYN short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float11.8%186,283,000 float shares
Days to Cover7.23,060,368 average daily volume
Open Short Position21,970,540Dyne Therapeutics, Inc. Common
Change vs Previous+479,360+2.2%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 202621,970,540+479,360+2.2%7.211.8%
Jul 15, 202621,491,180-810,843-3.6%10.611.5%
Jun 30, 202622,302,023-510,466-2.2%8.012.0%

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, 2026253,4550430,99958.8%3
Aug 20, 2026383,839628515,65874.4%3
Aug 19, 2026233,3251,203910,54325.6%3
Aug 18, 2026239,627152488,64249.0%3
Aug 17, 2026160,3930502,53331.9%3
Aug 14, 2026433,2586,136754,41057.4%3
Aug 13, 2026535,542254,833916,96458.4%3
Aug 12, 2026222,3802,958834,21526.7%3
Aug 11, 2026225,6150533,66142.3%3
Aug 10, 2026477,1524,163822,33758.0%3
Aug 7, 2026337,0413,428935,44736.0%3
Aug 6, 2026208,6483,408327,15763.8%3
Aug 5, 2026262,6266,643476,29655.1%3
Aug 4, 2026374,8824,625994,19937.7%3
Aug 3, 2026319,6213,024958,82133.3%3
Jul 31, 2026333,60858645,58851.7%3
Jul 30, 2026382,466389721,94253.0%3
Jul 29, 2026420,0719,799787,86353.3%3
Jul 28, 2026498,23114,487868,06657.4%3
Jul 27, 2026575,66501,136,28850.7%3
Jul 24, 2026730,31801,167,89962.5%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.