Stock Ownership/BIO

BIO RAD LABS INC (BIO): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in BIO · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
20
13F filers
Aggregate Value
$1.2B
Across holders
Last Price
$381.76
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity12 increased7 reduced3 exited
Full exits: SOUTHEASTERN ASSET MANAGEMENT INC/TN/, Bridgewater Associates, LP, Select Equity Group, L.P.
Institutional Holders of BIO
↗
20 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
First Eagle Investment Management, LLC
CIK 0001325447
Institutional Manager2.61M$765.2M62.1%1.3%Added$-735.8MQ2 2026
ARIEL INVESTMENTS, LLC
CIK 0000936753
Institutional Manager817K$239.8M19.5%2.4%Added+$225.1MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund193K$56.0M4.5%0.0%Added$-108.7MQ2 2026
Gotham Asset Management, LLC
CIK 0001510387
Hedge Fund166K$48.8M4.0%0.1%Added+$4.1MQ2 2026
Fisher Asset Management, LLC
CIK 0000850529
Institutional Manager117K$34.3M2.8%0.0%Reduced$-521KQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund61K$17.9M1.4%0.0%Reduced$-66.8MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund60K$17.6M1.4%0.0%Added+$17.4MQ2 2026
GAMCO INVESTORS, INC. ET AL
CIK 0000807249
Institutional Manager27K$7.9M0.6%0.1%Unchanged+$0Q2 2026
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
Hedge Fund25K$7.3M0.6%0.0%Added+$5.8MQ2 2026
Hound Partners, LLC
CIK 0001353316
Hedge Fund22K$6.6M0.5%0.8%Reduced$-22.1MQ2 2026
First Eagle Investment Management, LLCAdded
Institutional Manager
$765.2M· 62.1% of total· 1.3% port· 2.61M sh· $-735.8M QoQ· Q2 2026
ARIEL INVESTMENTS, LLCAdded
Institutional Manager
$239.8M· 19.5% of total· 2.4% port· 817K sh· +$225.1M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$56.0M· 4.5% of total· 0.0% port· 193K sh· $-108.7M QoQ· Q2 2026
Gotham Asset Management, LLCAdded
Hedge Fund
$48.8M· 4.0% of total· 0.1% port· 166K sh· +$4.1M QoQ· Q2 2026
Fisher Asset Management, LLCReduced
Institutional Manager
$34.3M· 2.8% of total· 0.0% port· 117K sh· $-521K QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$17.9M· 1.4% of total· 0.0% port· 61K sh· $-66.8M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$17.6M· 1.4% of total· 0.0% port· 60K sh· +$17.4M QoQ· Q2 2026
GAMCO INVESTORS, INC. ET ALUnchanged
Institutional Manager
$7.9M· 0.6% of total· 0.1% port· 27K sh· +$0 QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$7.3M· 0.6% of total· 0.0% port· 25K sh· +$5.8M QoQ· Q2 2026
Hound Partners, LLCReduced
Hedge Fund
$6.6M· 0.5% of total· 0.8% port· 22K sh· $-22.1M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$5.7M· 0.5% of total· 0.0% port· 19K sh· +$3.7M QoQ· Q2 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$5.6M· 0.5% of total· 0.0% port· 19K sh· +$2.0M QoQ· Q2 2026
CAXTON ASSOCIATES LLPAdded
Hedge Fund
$4.1M· 0.3% of total· 0.1% port· 14K sh· — QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$4.0M· 0.3% of total· 0.0% port· 14K sh· +$2.9M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPReduced
Hedge Fund
$4.0M· 0.3% of total· 0.0% port· 14K sh· $-610K QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$3.0M· 0.2% of total· 0.0% port· 10K sh· $-196K QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$2.5M· 0.2% of total· 0.0% port· 8K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$1.0M· 0.1% of total· 0.0% port· 3K sh· $-539K QoQ· Q2 2026
Man Group plcReduced
Hedge Fund
$422K· 0.0% of total· 0.0% port· 1K sh· $-3.9M QoQ· Q2 2026
Fulcrum Asset Management LLPAdded
Hedge Fund
$273K· 0.0% of total· 0.0% port· 924 sh· — QoQ· Q2 2026
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