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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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BMRN short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float6.5%192,379,000 float shares
Days to Cover7.41,684,263 average daily volume
Open Short Position12,504,131BioMarin Pharmaceutical Inc. C
Change vs Previous-1,811,853-12.7%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 202612,504,131-1,811,853-12.7%7.46.5%
Jul 15, 202614,315,984+407,137+2.9%10.27.4%
Jun 30, 202613,908,847+1,392,399+11.1%6.07.2%

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, 2026355,3530556,85763.8%3
Aug 20, 2026238,0410437,97554.4%3
Aug 19, 2026411,7749,664784,91852.5%3
Aug 18, 2026361,03010,340661,77954.6%3
Aug 17, 2026379,605108914,56341.5%3
Aug 14, 2026261,857211511,82151.2%3
Aug 13, 2026401,7030920,45043.6%3
Aug 12, 2026485,57801,309,56437.1%3
Aug 11, 2026699,633111,771,03239.5%3
Aug 10, 20261,149,49002,052,66556.0%3
Aug 7, 20261,270,1391,3011,783,32371.2%3
Aug 6, 2026644,9093001,316,37649.0%3
Aug 5, 2026223,81524,848439,48950.9%3
Aug 4, 2026222,282400373,87659.5%3
Aug 3, 2026398,4280654,12360.9%3
Jul 31, 2026665,0187001,080,77861.5%3
Jul 30, 2026306,9110439,41669.8%3
Jul 29, 2026272,199800637,67642.7%3
Jul 28, 2026459,9980788,75158.3%3
Jul 27, 2026269,9750513,85252.5%3
Jul 24, 2026412,4750514,06580.2%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.