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.

Explore more:

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2021Sequoia FundSell-20,26848,792$4,182
Q4 2021Renaissance Technologies LLCSell-16,708426,233$36,532
Q4 2021Conifer ManagementSell-1,296,9813,000,000$257,130
Q3 2021Sequoia FundBuy20969,060$3,573
Q3 2021Atlantic Investment ManagementBuy100,000100,000$5,174
Q3 2021Renaissance Technologies LLCSell-323,800442,941$22,918
Q3 2021Ancient Art (Teton Capital)Sell-74,8631,209,535$62,581
Q2 2021Sequoia FundSell-2,67268,851$2,937
Q2 2021Renaissance Technologies LLCBuy353,541766,741$32,709
Q2 2021Conifer ManagementSell-400,0004,296,981$183,309
Q1 2021Sequoia FundSell-6,56171,523$3,317
Q1 2021Ancient Art (Teton Capital)Buy115,2071,284,398$59,558
Q1 2021Conifer ManagementSell-303,0194,696,981$217,799
Q4 2020Sequoia FundSell-1,37778,084$3,187
Q4 2020Renaissance Technologies LLCSell-712,019413,200$16,863
Q4 2020Ancient Art (Teton Capital)Buy50,0001,169,191$47,715
Q4 2020Conifer ManagementSell-2,200,0005,000,000$204,050
Q3 2020Sequoia FundSell-10179,461$2,592
Q3 2020Ancient Art (Teton Capital)Buy387,8601,119,191$36,508
Q3 2020Renaissance Technologies LLCSell-1,798,3001,125,219$36,705
Q3 2020Conifer ManagementSell-2,800,0007,200,000$234,864
Q2 2020Sequoia FundSell-1,31979,562$1,647
Q2 2020Ancient Art (Teton Capital)Sell-174,361731,331$15,139
Q2 2020Renaissance Technologies LLCSell-1,432,0002,923,519$60,517
Q1 2020Sequoia FundBuy7,76080,881$989
Q1 2020Ancient Art (Teton Capital)Buy519,685905,692$11,077
Q1 2020Renaissance Technologies LLCBuy228,7004,355,519$53,268
Q1 2020Conifer ManagementBuy3,180,36010,000,000$122,300
Q4 2019Sequoia FundBuy13073,121$1,858
Q4 2019Ancient Art (Teton Capital)Sell-340,709386,007$9,808

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.