BIOMARIN PHARMACEUTICAL INC (BMRN) Stock Institutional Trading Activity


BIOMARIN PHARMACEUTICAL INC (BMRN) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Viking Global Investors, Renaissance Technologies LLC, Dodge & Cox Stock Fund, Sequoia Financial Advisors, and Torray Fund. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2020Torray FundBuy4,03760,542$5,116
Q1 2020Dodge & Cox Stock FundSell-447,0073,942,508$333,142
Q1 2020Renaissance Technologies LLCSell-183,37119,100$1,614
Q1 2020Viking Global InvestorsSell-168,1141,453,625$122,831
Q4 2019Torray FundSell-145,45056,505$4,777
Q4 2019Dodge & Cox Stock FundBuy4,389,5154,389,515$371,133
Q4 2019Renaissance Technologies LLCSell-353,600202,471$17,119
Q4 2019Viking Global InvestorsSell-1,436,3651,621,739$137,118
Q3 2019Renaissance Technologies LLCBuy18,700556,071$37,479
Q3 2019Viking Global InvestorsBuy467,7533,058,104$206,116
Q3 2019Torray FundBuy954201,955$13,612
Q2 2019Renaissance Technologies LLCBuy215,400537,371$46,026
Q2 2019Viking Global InvestorsSell-2,538,5582,590,351$221,864
Q2 2019Torray FundSell-19,086201,001$17,216
Q1 2019Renaissance Technologies LLCBuy278,400321,971$28,601
Q1 2019Viking Global InvestorsBuy37,2725,128,909$455,601
Q1 2019Torray FundSell-4,552220,087$19,550
Q4 2018Renaissance Technologies LLCSell-163,40043,571$3,710
Q4 2018Viking Global InvestorsBuy962,6965,091,637$433,553
Q4 2018Torray FundSell-12,632224,639$19,128
Q3 2018Renaissance Technologies LLCBuy78,400206,971$20,070
Q3 2018Viking Global InvestorsBuy869,1844,128,941$400,383
Q3 2018Torray FundSell-4,424237,271$23,008
Q2 2018Viking Global InvestorsBuy1,577,2913,259,757$307,069
Q2 2018Torray FundSell-8,301241,695$22,768
Q1 2018Renaissance Technologies LLCSell-132,800128,571$10,423
Q1 2018Viking Global InvestorsBuy1,422,8101,682,466$136,398
Q1 2018Torray FundBuy2,197249,996$20,267
Q4 2017Renaissance Technologies LLCSell-58,900261,371$23,306
Q4 2017Torray FundBuy19,003247,799$22,096

Frequently asked questions about BMRN activity

  • Which institutional owners are buying BMRN?

    Institutional owners buying BMRN 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 BMRN activity?

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

  • Is institutional interest in BMRN increasing?

    Institutional interest in BMRN 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.