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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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RGEN short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float11.5%53,390,000 float shares
Days to Cover3.91,561,230 average daily volume
Open Short Position6,132,499Repligen Corporation Common St
Change vs Previous+320,754+5.5%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20266,132,499+320,754+5.5%3.911.5%
Jul 15, 20265,811,745-237,067-3.9%7.910.9%
Jun 30, 20266,048,812+322,547+5.6%4.711.3%

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, 2026449,8844,367587,10676.6%3
Aug 20, 2026480,20115,851766,36462.7%3
Aug 19, 2026409,4834,3661,015,12140.3%3
Aug 18, 2026138,8750195,65471.0%3
Aug 17, 2026170,04456264,19764.4%3
Aug 14, 2026184,4033,023240,54776.7%3
Aug 13, 2026255,7847308,53782.9%3
Aug 12, 2026279,1150372,60574.9%3
Aug 11, 2026315,01045479,62965.7%3
Aug 10, 2026200,1370283,92670.5%3
Aug 7, 2026323,4739431,61074.9%3
Aug 6, 2026403,1160573,86870.2%3
Aug 5, 2026476,9873619,58377.0%3
Aug 4, 2026339,2576491,80669.0%3
Aug 3, 2026320,1320483,06266.3%3
Jul 31, 2026244,1730327,69874.5%3
Jul 30, 2026248,3740450,64055.1%3
Jul 29, 2026553,11753693,51879.8%3
Jul 28, 2026773,50112,4121,058,82273.1%3
Jul 27, 2026437,58836621,79770.4%3
Jul 24, 2026470,733100623,45775.5%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.