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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
CFM
151
Catalyst Funds Management
Australia
$1.21M +$469K +1,725 +67%
Stifel Financial
152
Stifel Financial
Missouri
$1.2M -$14.4K -53 -1%
MK
153
MASTERINVEST Kapitalanlage
$1.19M -$60.1K -221 -5%
Zurich Cantonal Bank
154
Zurich Cantonal Bank
Switzerland
$1.18M – – –
Thrivent Financial for Lutherans
155
Thrivent Financial for Lutherans
Minnesota
$1.18M -$50.3K -185 -4%
AUB
156
Atlantic Union Bankshares
Virginia
$1.15M +$1.12M +4,099 New
NMIMC
157
Northwestern Mutual Investment Management Company
Wisconsin
$1.14M -$22.9K -84 -2%
OTL
158
Oak Thistle LLC
New York
$1.12M +$613K +2,252 +129%
NMERB
159
New Mexico Educational Retirement Board
New Mexico
$1.09M – – –
KK
160
KLP Kapitalforvaltning
Norway
$1.09M -$54.4K -200 -5%
Citigroup
161
Citigroup
New York
$1.08M -$15.7M -57,831 -94%
Osaic Holdings
162
Osaic Holdings
Arizona
$1.05M +$45.4K +167 +5%
Pacer Advisors
163
Pacer Advisors
Pennsylvania
$1.04M +$620K +2,279 +160%
OPERF
164
Oregon Public Employees Retirement Fund
Oregon
$1.04M -$34.3K -126 -3%
OAM
165
Oppenheimer Asset Management
New York
$995K +$185K +679 +24%
CC
166
Clearline Capital
New York
$991K – – –
Creative Planning
167
Creative Planning
Kansas
$961K +$172K +631 +23%
AIP
168
Ameritas Investment Partners
Nebraska
$959K -$51.4K -189 -5%
TI
169
Tidal Investments
Wisconsin
$945K -$75.4K -277 -8%
DTL
170
Dynamic Technology Lab
Singapore
$926K +$898K +3,301 New
BNP Paribas Financial Markets
171
BNP Paribas Financial Markets
France
$926K -$146K -536 -14%
D.E. Shaw & Co
172
D.E. Shaw & Co
New York
$925K – – –
OAM
173
OP Asset Management
$924K +$897K +3,296 New
HC
174
Hara Capital
Washington
$913K +$886K +3,255 New
BGIM
175
Brandywine Global Investment Management
Pennsylvania
$884K +$858K +3,153 New
5 6
7
8 9

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.