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BIO RAD LABS INC

BIO

Holders

10

Combined Value

$418M

Combined Shares

1,502,339

Current Price

$284.67

52W High

$343.12

vs 52W High

−17.0%

Investor Activity

$222.68$268.66$314.64$360.61Q2'24Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25Q1'26▲9▲4 ▼5▲4 ▼6▲5 ▼5▲3 ▼5▲5 ▼4▲2 ▼7▲6 ▼3
BUYSELLImplied priceClick a quarter to see who traded

Held By

InvestorValue% of PortfolioAvg Buy PriceGainLast ActivityAs of
John Rogers - Ariel Investments$219M2.45%~$295.97−3.8%Bought Q1 2026Q1 2026
Mason Hawkins - Southeastern Asset Management$45M2.23%~$271.71+4.8%Sold Q1 2026Q1 2026
Joel Greenblatt - Gotham Asset Management$42M0.13%~$264.55+7.6%Bought Q1 2026Q1 2026
Ken Griffin - Citadel Advisors$41M0.01%~$278.59+2.2%Bought Q1 2026Q1 2026
Ken Fisher - Fisher Investments$33M0.01%~$271.00+5.0%Sold Q1 2026Q1 2026
Cliff Asness - AQR Capital$26M0.01%~$273.70+4.0%Bought Q1 2026Q1 2026
Mario Gabelli - GAMCO Investors$7M0.07%~$273.11+4.2%Bought Q2 2024Q1 2026
Paul Tudor Jones - Tudor Investment$1M0.00%~$278.75+2.1%Bought Q1 2026Q1 2026
Israel Englander - Millennium Management$1M0.00%~$322.99−11.9%Sold Q1 2026Q1 2026
Ray Dalio - Bridgewater Associates$469K0.00%~$278.75+2.1%Bought Q1 2026Q1 2026

Recent Activity

QuarterInvestorActionEst. ValueEst. Price
Q1 2026Ken Griffin - Citadel AdvisorsBUY+$38M~$278.75
Q1 2026Mason Hawkins - Southeastern Asset ManagementSELL−$18M~$278.75
Q1 2026Cliff Asness - AQR CapitalBUY+$14M~$275.28
Q1 2026Joel Greenblatt - Gotham Asset ManagementBUY+$9M~$278.75
Q1 2026Israel Englander - Millennium ManagementSELL−$9M~$278.75
Q1 2026John Rogers - Ariel InvestmentsBUY+$5M~$278.75
Q1 2026Ken Fisher - Fisher InvestmentsSELL−$3M~$278.75
Q1 2026Paul Tudor Jones - Tudor InvestmentNEW BUY+$1M~$278.75
Q1 2026Ray Dalio - Bridgewater AssociatesNEW BUY+$469K~$278.75
Q4 2025John Rogers - Ariel InvestmentsSELL−$13M~$302.99
Q4 2025Ken Griffin - Citadel AdvisorsSELL−$12M~$302.99
Q4 2025Israel Englander - Millennium ManagementBUY+$3M~$302.99
Q4 2025Ray Dalio - Bridgewater AssociatesSOLD OUT−$2M~$280.39
Q4 2025Steve Cohen - Point72SOLD OUT−$2M~$280.39
Q4 2025Mason Hawkins - Southeastern Asset ManagementSELL−$2M~$302.99
Q4 2025Cliff Asness - AQR CapitalBUY+$2M~$302.99
Q4 2025Joel Greenblatt - Gotham Asset ManagementSELL−$2M~$302.99
Q4 2025Ken Fisher - Fisher InvestmentsSELL−$718K~$302.99
Q3 2025Israel Englander - Millennium ManagementSELL−$63M~$280.39
Q3 2025Mason Hawkins - Southeastern Asset ManagementSELL−$21M~$280.39
Q3 2025Joel Greenblatt - Gotham Asset ManagementBUY+$10M~$280.39
Q3 2025Ken Griffin - Citadel AdvisorsBUY+$7M~$280.39
Q3 2025Ray Dalio - Bridgewater AssociatesNEW BUY+$2M~$280.39
Q3 2025Steve Cohen - Point72NEW BUY+$2M~$280.39
Q3 2025John Rogers - Ariel InvestmentsSELL−$2M~$280.39

Ownership History

PeriodHoldersTotal SharesΔ SharesTotal ValueImplied Price
Q1 2026101,502,339+10.8%$418M$278.53
Q4 202581,356,145−7.3%$410M$302.99
Q3 2025101,463,134−13.6%$410M$280.23
Q2 202581,693,419+1.8%$408M$241.32
Q1 202591,664,153−4.7%$405M$243.50
Q4 2024111,746,311−3.9%$573M$328.51
Q3 2024101,816,688+142.5%$607M$334.52
Q2 20249749,012—$204M$273.10