Ticker · CUSIP 090572207

BIO

BIO RAD LABS INC

Healthcare·Medical Devices

···Share

Holders (tracked)

Combined shares

4,048,163

Combined value

$1.20B

Last close

—

Quarter

2025Q4

Tracked holders · last 8 quarters

-1 vs previous quarter over the last 8.

SEC event timeline

25 events

Jonathan Auerbach (Hound Partners) trimmed2026-02-17
−60,695 shares · 2025Q4
13F
Ken Griffin (Citadel Advisors) trimmed2026-02-17
−40,826 shares · 2025Q4
13F
D.E. Shaw & Co. added2026-02-17
+1,530 shares · 2025Q4
13F
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−2,249 shares · 2025Q4
13F
AQR Capital Management added2026-02-17
+8,224 shares · 2025Q4
13F
Steve Cohen (Point72) exited2026-02-17
−10,195 shares · 2025Q4
13F
T. Rowe Price added2026-02-17
+794 shares · 2025Q4
13F
Southeastern Asset (Longleaf) trimmed2026-02-13
−9,624 shares · 2025Q4
13F
Ray Dalio (Bridgewater Associates) exited2026-02-13
−10,632 shares · 2025Q4
13F
John Rogers (Ariel Investments) trimmed2026-02-13
−44,808 shares · 2025Q4
13F
Norges Bank (Norway SWF) opened position2026-02-10
+114,194 shares · 2025Q4
13F
Ken Fisher (Fisher Asset Mgmt) trimmed2026-02-09
−2,371 shares · 2025Q4
13F
First Eagle Investment Management added2026-02-04
+50,154 shares · 2025Q4
13F
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−227,393 shares · 2025Q3
13F
Steve Cohen (Point72) opened position2025-11-14
+10,195 shares · 2025Q3
13F
AQR Capital Management added2025-11-14
+3,782 shares · 2025Q3
13F
T. Rowe Price added2025-11-14
+38,654 shares · 2025Q3
13F
Southeastern Asset (Longleaf) trimmed2025-11-14
−78,031 shares · 2025Q3
13F
Jonathan Auerbach (Hound Partners) trimmed2025-11-14
−77,973 shares · 2025Q3
13F
John Rogers (Ariel Investments) trimmed2025-11-14
−9,144 shares · 2025Q3
13F
Ray Dalio (Bridgewater Associates) opened position2025-11-13
+10,632 shares · 2025Q3
13F
Norges Bank (Norway SWF) exited2025-11-13
−128,408 shares · 2025Q3
13F
Ken Fisher (Fisher Asset Mgmt) trimmed2025-11-12
−4,277 shares · 2025Q3
13F
Norges Bank (Norway SWF) trimmed2025-11-12
−32,045 shares · 2024Q3
13F
First Eagle Investment Management added2025-11-12
+3,006 shares · 2025Q3
13F

Insider activity

No insider transactions in the last 30 days.

View full insider history for BIO →

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.

New positions1

Norges Bank (Norway SWF)
+114,194
$34.6M

Added to4

First Eagle Investment Management
+50,154
$15.2M
AQR Capital Management
+8,224
$2.5M
D.E. Shaw & Co.
+1,530
$464K
T. Rowe Price
+794
$241

Trimmed6

Jonathan Auerbach (Hound Partners)
−60,695
$18.4M
John Rogers (Ariel Investments)
−44,808
$13.6M
Ken Griffin (Citadel Advisors)
−40,826
$12.4M
Southeastern Asset (Longleaf)
−9,624
$2.9M
Ken Fisher (Fisher Asset Mgmt)
−2,371
$718K
Izzy Englander (Millennium Mgmt)
−2,249
$681K

Exited2

Ray Dalio (Bridgewater Associates)
−10,632
$3.0M
Steve Cohen (Point72)
−10,195
$2.9M

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	23	3,619,451	$119.80B	—
2022Q2	21	3,256,963	$99.40B	-2
2022Q3	22	3,307,696	$85.5M	+1
2022Q4	23	3,187,889	$1.07B	+1
2023Q1	24	3,080,216	$1.19B	+1
2023Q2	23	3,132,350	$1.17B	-1
2023Q3	21	3,059,680	$1.08B	-2
2023Q4	18	2,952,333	$939.1M	-3
2024Q1	19	2,879,860	$980.6M	+1
2024Q2	18	3,400,823	$916.4M	-1
2024Q3	20	2,830,054	$937.5M	+2
2024Q4	19	2,679,310	$870.6M	-1
2025Q1	15	3,454,419	$834.1M	-4
2025Q2	14	4,473,336	$1.07B	-1
2025Q3	15	4,041,567	$1.11B	+1
2025Q4	14	4,048,163	$1.20B	-1

Who owns BIO

14 super-investors · 2025Q4

Tracked stake

4.05M

Combined value

$1.20B

% of shares outstanding

—

shares-out unknown

Quarter action mix

New1Added4Trim8Held1

#	Manager	Shares	Value	% of book	Last action
1	First Eagle Investment Management	2.57M	$779M	1.4%	Added+50.2K
2	John Rogers Ariel Investments	764.7K	$232M	2.5%	Trim−44.8K
3	Southeastern Asset Longleaf	227.6K	$69M	3.1%	Trim−9.6K
4	Ken Fisher Fisher Asset Mgmt	131.1K	$40M	0.0%	Trim−2.4K
5	Norges Bank Norway SWF	114.2K	$35M	0.0%	New+114.2K
6	Jonathan Auerbach Hound Partners	43.3K	$13M	1.8%	Trim−60.7K
7	AQR Capital Management	40.2K	$12M	0.0%	Added+8.2K
8	Mario Gabelli GAMCO	26.8K	$8M	0.1%	Held
9	Izzy Englander Millennium Mgmt	22.2K	$7M	0.0%	Trim−2.2K
10	Izzy Englander Millennium Mgmt	15.0K	$5M	0.0%	Trim−2.2K
11	Ken Griffin Citadel Advisors	9.5K	$3M	0.0%	Trim−40.8K
12	D.E. Shaw & Co.	4.8K	$1M	0.0%	Added+1.5K
13	Ken Griffin Citadel Advisors	2.1K	$636K	0.0%	Trim−40.8K
14	T. Rowe Price	76.3K	$23K	0.0%	Added+794

Recent moves

20 transactions

TRIMIzzy Englander (Millennium Mgmt)
−2,249 · 2025Q4
ADDAQR Capital Management
+8,224 · 2025Q4
TRIMJonathan Auerbach (Hound Partners)
−60,695 · 2025Q4
SOLDSteve Cohen (Point72)
−10,195 · 2025Q4
ADDD.E. Shaw & Co.
+1,530 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−40,826 · 2025Q4
ADDT. Rowe Price
+794 · 2025Q4
SOLDRay Dalio (Bridgewater Associates)
−10,632 · 2025Q4
TRIMJohn Rogers (Ariel Investments)
−44,808 · 2025Q4
TRIMSoutheastern Asset (Longleaf)
−9,624 · 2025Q4
NEWNorges Bank (Norway SWF)
+114,194 · 2025Q4
TRIMKen Fisher (Fisher Asset Mgmt)
−2,371 · 2025Q4
ADDFirst Eagle Investment Management
+50,154 · 2025Q4
TRIMJonathan Auerbach (Hound Partners)
−77,973 · 2025Q3
ADDT. Rowe Price
+38,654 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−227,393 · 2025Q3
TRIMSoutheastern Asset (Longleaf)
−78,031 · 2025Q3
NEWSteve Cohen (Point72)
+10,195 · 2025Q3
TRIMJohn Rogers (Ariel Investments)
−9,144 · 2025Q3
ADDAQR Capital Management
+3,782 · 2025Q3

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