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Bio-Rad Laboratories Class A
BIO

396 hedge funds and large institutions have $5.46B invested in Bio-Rad Laboratories Class A in 2025 Q3 according to their latest regulatory filings, with 64 funds opening new positions, 120 increasing their positions, 139 reducing their positions, and 47 closing their positions.

New
Increased
Maintained
Reduced
Closed

115% more call options, than puts

Call options by funds: $1.99M | Put options by funds: $925K

36% more first-time investments, than exits

New positions opened: 64 | Existing positions closed: 47

18% more capital invested

Capital invested by funds: $4.63B → $5.46B (+$826M)

3% more funds holding

Funds holding: 383 → 396 (+13)

1.88% more ownership

Funds ownership: 86.68% → 88.56% (+1.9%)

0% more funds holding in top 10

Funds holding in top 10: 5 → 5 (0)

14% less repeat investments, than reductions

Existing positions increased: 120 | Existing positions reduced: 139

Holders
396
Holders Change
+13
Holders Change %
+3.39%
% of All Funds
5.2%
Holding in Top 10
5
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.07%
New
64
Increased
120
Reduced
139
Closed
47
Calls
$1.99M
Puts
$925K
Net Calls
+$1.06M
Net Calls Change
+$6.93M

Top Buyers

Rank Fund Capital Flow
1
Capital Research Global Investors
Capital Research Global Investors
California
+$114M
2
UBS AM
UBS AM
Illinois
+$104M
3
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management
California
+$64.7M
4
MP
Mangrove Partners
Connecticut
+$34.5M
5
BTW
Boston Trust Walden
Massachusetts
+$26M

Top Sellers

Rank Fund Capital Flow
1
Millennium Management
Millennium Management
New York
-$61.9M
2
Select Equity Group
Select Equity Group
New York
-$61.8M
3
TSW
Thompson Siegel & Walmsley
Virginia
-$24.1M
4
ECM
ExodusPoint Capital Management
New York
-$23.2M
5
Goldman Sachs
Goldman Sachs
New York
-$23M
Name Holding Trade Value Shares
Change 		Change in
Stake
CFO
376
CVA Family Office
Colorado
$1.12K +$1.09K +4 New
SGK
377
Steigerwald Gordon & Koch
Virginia
$1.12K +$1.09K +4 New
SA
378
Strategic Advocates
Utah
$1.12K +$1.09K +4 New
WA
379
Westfuller Advisors
New York
$1.12K +$1.09K +4 New
RS
380
Rakuten Securities
Japan
$841 -$17.1K -63 -95%
TIM
381
Tortoise Investment Management
New York
$841 +$272 +1 +50%
SC
382
SouthState Corp
Florida
$561 -$1.09K -4 -67%
BFS
383
Bare Financial Services
Pennsylvania
$561 – – –
SIC
384
SJS Investment Consulting
Ohio
$561 – – –
SWP
385
Strategic Wealth Partners
Ohio
$561 – – –
HIA
386
HFM Investment Advisors
New Jersey
$561 +$272 +1 +100%
RIL
387
Rothschild Investment LLC
Illinois
$561 +$272 +1 +100%
RWM
388
Rialto Wealth Management
New York
$561 +$544 +2 New
TFA
389
Transamerica Financial Advisors
Florida
$561 +$544 +2 New
KFI
390
Key Financial Inc
Pennsylvania
$298 – – –
TFM
391
TFC Financial Management
Massachusetts
$281 – – –
AF
392
Advisornet Financial
Minnesota
$280 – – –
BHWM
393
Bay Harbor Wealth Management
Maryland
$280 – – –
DF
394
Dunhill Financial
United Kingdom
$145 – – –
Select Equity Group
395
Select Equity Group
New York
– -$61.8M -255,989 Closed
Norges Bank
396
Norges Bank
Norway
– -$31M -128,408 Closed
SCM
397
Scopia Capital Management
New York
– -$22.9M -94,737 Closed
FGP
398
Freestone Grove Partners
California
– -$17.8M -73,616 Closed
Capital Fund Management (CFM)
399
Capital Fund Management (CFM)
France
– -$4.97M -20,591 Closed
JG
400
Jain Global
New York
– -$3.64M -15,064 Closed
14 15
16
17 18

BIO Hedge Fund Activity: Q3 2025 in Review

396 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Bio-Rad Laboratories Class A (BIO) for Q3 2025, worth a combined $5.46B — up 18% from $4.63B a quarter earlier.

Buyers outnumbered sellers: 64 funds opened new BIO positions and 47 closed out — a net gain of 17 holders — while 120 added to existing stakes and 139 trimmed.

The largest buyer was Capital Research Global Investors, opening a new position worth an estimated $114M. The largest seller was Millennium Management, cutting an estimated $61.9M.

  • 396 institutional investors held Bio-Rad Laboratories Class A (BIO) as of Q3 2025, up from 383 in Q2 2025.
  • Funds reported $5.46B of Bio-Rad Laboratories Class A stock for Q3 2025, up 18% quarter-over-quarter.
  • 64 funds opened new Bio-Rad Laboratories Class A positions in Q3 2025 and 47 closed out, a net change of +17 holders.
  • The largest Bio-Rad Laboratories Class A buyer in Q3 2025 was Capital Research Global Investors, an estimated $114M added.
  • The largest Bio-Rad Laboratories Class A seller in Q3 2025 was Millennium Management, an estimated $61.9M sold.

Based on aggregated 13F filings for Q3 2025.