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Biomarin Pharmaceutical BMRN

US equityMarket cap rank #1366
$57.54 +$0.36 (+0.63%)
Market closed · Oct 5, 8:10 pm ET · Last extended-hours $57.54 0.00%
Open$57.11
Prev close$57.18
Day range$56.82 – $58.11
Volume2.41M
Market cap$11.14B
P/E (TTM)151.4
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Short interest5.21% of floatDays to cover 5.5 · as of 15 Sep 2026
Short-sale volume share23.2%5-day average of daily volume

Short-sale volume as % of daily volume

13%18%23%28%Sep '26Sep '26Oct '26

Reported short interest has fallen from 7.20% to 5.21% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 10,075,655 5.2% 5.5
31 Aug 2026 9,877,553 5.1% 5.8
14 Aug 2026 10,202,950 5.3% 3.7
31 Jul 2026 12,504,131 6.5% 7.4
15 Jul 2026 14,315,984 7.4% 10.2
30 Jun 2026 13,908,847 7.2% 6.0

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