BIO-RAD LABORATORIES-A (BIO) Institutional Ownership Changes & 13F Activity

BIO-RAD LABORATORIES-A (BIO) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Longleaf Partners, First Eagle U.S. Value, Ariel Appreciation Fund, Parnassus Endeavor Fund, and Sequoia Financial Advisors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2022Ariel Appreciation FundBuy2,16763,903$31,632
Q2 2022Meritage GroupSell-324469$232
Q1 2022Renaissance Technologies LLCBuy131,600187,800$105,775
Q1 2022Ariel Appreciation FundBuy5,98661,736$34,771
Q1 2022Meritage GroupSell-229793$447
Q4 2021Renaissance Technologies LLCBuy16,60056,200$42,463
Q4 2021Ariel Appreciation FundBuy3,81055,750$42,123
Q4 2021Meritage GroupBuy5661,022$772
Q4 2021Matrix Private Capital GroupSell-1307$232
Q3 2021Renaissance Technologies LLCSell-7,30039,600$29,540
Q3 2021Meritage GroupSell-415456$340
Q3 2021Ariel Appreciation FundSell-19451,940$38,745
Q3 2021Matrix Private Capital GroupSell-74308$230
Q2 2021Renaissance Technologies LLCSell-4,40046,900$30,217
Q2 2021Ariel Appreciation FundBuy83352,134$33,589
Q2 2021Meritage GroupBuy142871$561
Q1 2021Renaissance Technologies LLCBuy3,90051,300$29,301
Q1 2021Ariel Appreciation FundBuy1,99051,301$29,302
Q1 2021Meritage GroupBuy57729$416
Q1 2021Matrix Private Capital GroupBuy5382$218
Q4 2020Ariel Appreciation FundSell-15,08249,311$28,745
Q4 2020Matrix Private Capital GroupBuy377377$220
Q4 2020Meritage GroupSell-89672$392
Q3 2020Renaissance Technologies LLCBuy15,60047,400$24,433
Q3 2020Ariel Appreciation FundSell-8,29364,393$33,192
Q3 2020Meritage GroupBuy761761$392
Q2 2020Ariel Appreciation FundSell-86,12872,686$32,817
Q2 2020Renaissance Technologies LLCSell-29,90031,800$14,357
Q1 2020Ariel Appreciation FundSell-67,684158,814$55,674
Q1 2020Renaissance Technologies LLCSell-16,70061,700$21,630

Frequently asked questions about BIO activity

  • Which institutional owners are buying BIO?

    Institutional owners buying BIO include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in BIO activity?

    "Buy" means an investor increased their reported position in BIO compared to the prior reporting period. This reflects growing exposure to BIO-RAD LABORATORIES-A (BIO) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in BIO increasing?

    Institutional interest in BIO can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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