BUILDERS FIRSTSOURCE INC (BLDR) Stock Institutional Trading Activity


BUILDERS FIRSTSOURCE INC (BLDR) 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 Brave Warrior Advisors, Renaissance Technologies LLC, Turtle Creek Asset Management, Giverny Capital, and Parnassus Endeavor 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
Q4 2025Giverny CapitalBuy2,88889,984$9,258,454
Q4 2025Renaissance Technologies LLCBuy272,400534,741$55,019,501
Q4 2025Brave Warrior AdvisorsBuy573,7642,379,145$244,790,229
Q4 2025Turtle Creek Asset ManagementBuy11,10067,640$6,959,480
Q3 2025Sequoia Financial AdvisorsBuy1,0792,809$340,628
Q3 2025Parnassus Endeavor FundSell-1,384126,309$15,314,966
Q3 2025Giverny CapitalSell-22187,096$194,920,848
Q3 2025Brave Warrior AdvisorsSell-21,8801,805,381$218,902,446
Q3 2025Turtle Creek Asset ManagementSell-10,05056,540$6,855,475
Q2 2025Sequoia Financial AdvisorsSell-2581,730$201,864
Q2 2025Giverny CapitalBuy4,87287,317$10,189,021
Q2 2025Atlantic Investment ManagementBuy19,000119,000$13,886,110
Q2 2025Parnassus Endeavor FundBuy19,723127,693$14,900,496
Q2 2025Renaissance Technologies LLCBuy192,700262,341$30,612,571
Q2 2025Egerton Capital UKBuy262,628262,628$30,646,061
Q2 2025Brave Warrior AdvisorsBuy585,6831,827,261$213,223,086
Q2 2025Turtle Creek Asset ManagementBuy33,65066,590$7,770,387
Q1 2025Sequoia Financial AdvisorsBuy301,988$248,381
Q1 2025Giverny CapitalBuy82,44582,445$10,300,678
Q1 2025Parnassus Endeavor FundBuy107,970107,970$13,489,772
Q1 2025Brave Warrior AdvisorsBuy1,241,5781,241,578$155,122,755
Q1 2025Turtle Creek Asset ManagementBuy13,80032,940$4,115,524
Q4 2024Sequoia Financial AdvisorsSell-8241,958$279,857
Q4 2024Renaissance Technologies LLCSell-95969,641$9,953,788
Q4 2024Turtle Creek Asset ManagementBuy5,90019,140$2,735,680
Q3 2024Sequoia Financial AdvisorsBuy1,4772,782$539,319
Q3 2024Turtle Creek Asset ManagementSell-12,60013,240$2,566,706
Q2 2024Turtle Creek Asset ManagementBuy17,30025,840$3,576,514
Q1 2024Renaissance Technologies LLCSell-173,40070,600$14,724
Q1 2024Sequoia Financial AdvisorsBuy21,305$272,158

Frequently asked questions about BLDR activity

  • Which institutional owners are buying BLDR?

    Institutional owners buying BLDR 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 BLDR activity?

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

  • Is institutional interest in BLDR increasing?

    Institutional interest in BLDR 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.