BIOBio-Rad Laboratories, Inc.

$366.40+29% 1Y

Who owns BIO

396 institutions reported holding BIO for 2026Q2, together 72% of the company, more than the 390 a quarter earlier.

396

Institutions reporting a position · as of 2026Q2 · up from 390 the quarter before

Shares held by institutions
19.4M

Shares held by institutions · 72% of the company · long US equity positions only, as reported on Form 13F

Reported value
$5.70B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
29%

Top 5 holders · of the whole company, between five filers

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
53
New positions
61
Positions exited
56
Added to
103
Reduced
140
Top 10 holdersof the company
39%
Shares sold shortsettled Sep 15, 2026
1.0M
Short interestof shares outstanding
3.7%
Days to coverat the average daily volume
3.8
Change in the short positionsince the Aug 31, 2026 count
−12%
Institutional ownership by quarter, 2013Q2 to 2026Q2
QuarterFilersSharesReported value
2026Q239619.4M$5.70B
2026Q139020.0M$5.57B
2025Q439619.5M$5.89B
2025Q339419.4M$5.43B
2025Q238019.1M$4.61B
2025Q143319.5M$4.71B
2024Q445418.8M$6.17B
2024Q343519.4M$6.48B
2024Q243819.8M$5.41B
2024Q146018.5M$6.40B
2023Q447918.5M$5.98B
2023Q346318.8M$6.73B
2023Q246518.8M$7.19B
2023Q150119.2M$9.19B
2022Q446719.3M$8.11B
2022Q348119.5M$8.13B
Largest reported holders, 2026Q2
HolderShares% of companyValue
First Eagle Investment Management, LLC2.6M9.7%$765M
VANGUARD GROUP INC1.8M6.6%$526M
BlackRock Inc.1.7M6.3%$499M
DIMENSIONAL FUND ADVISORS LP0.9M3.5%$277M
ARIEL INVESTMENTS, LLC0.8M3.0%$240M
EARNEST PARTNERS LLC0.6M2.2%$171M
STATE STREET CORP0.6M2.1%$168M
BANK OF AMERICA CORP /DE/0.5M1.8%$144M
Capital World Investors0.5M1.7%$136M
Capital Research Global Investors0.4M1.6%$130M
Short interest by settlement date, Aug 29, 2025 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 20261.0M3.7%3.8
Aug 31, 20261.1M4.2%4.2
Aug 14, 20261.3M4.9%4.8
Jul 31, 20261.4M5.2%4.3
Jul 15, 20261.6M5.8%6.0
Jun 30, 20261.5M5.6%4.1
Jun 15, 20261.5M5.6%4.4
May 29, 20261.5M5.6%2.6
May 15, 20261.3M5.0%2.9
Apr 30, 20261.1M4.1%3.7
Apr 15, 20261.1M4.0%4.3
Mar 31, 20261.2M4.5%3.4

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

opening the register…
On our screens:Stocks with no debt