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Builders FirstSource

719 hedge funds and large institutions have $8.74B invested in Builders FirstSource in 2026 Q1 according to their latest regulatory filings, with 104 funds opening new positions, 274 increasing their positions, 239 reducing their positions, and 135 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more ownership

Funds ownership:

more funds holding in top 10

Funds holding in top 10:

6% less funds holding

Funds holding: 765719 (-46)

19% less capital invested

Capital invested by funds: $10.8B → $8.74B (-$2.09B)

23% less first-time investments, than exits

New positions opened: 104 | Existing positions closed: 135

Holders
719
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
13
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$178M
Puts
$111M
Net Calls
Net Calls Change

Top Sellers

1 -$236M
2 -$180M
3 -$175M
4
Citadel Advisors
Citadel Advisors
Florida
-$79.4M
5
AssetMark Inc
AssetMark Inc
California
-$61.2M
Name Holding Trade Value Shares
Change
Change in
Stake
TFIPS
601
Towarzystwo Funduszy Inwestycyjnych PZU SA
$20.6K
SWM
602
Spire Wealth Management
Virginia
$20.4K
BIA
603
Bell Investment Advisors
California
$18.8K
RAM
604
Ramirez Asset Management
New York
$16.5K
BW
605
Basepoint Wealth
Iowa
$16.5K
EWP
606
Elevation Wealth Partners
California
$16.5K
MHR
607
Matthew Hamilton Rosenberg
$15.5K
MG
608
Mather Group
Illinois
$15.2K
EF
609
Entrust Financial
Pennsylvania
$14.8K
TSMHT
610
Thurston Springer Miller Herd & Titak
Indiana
$14.8K
GWM
611
Geneos Wealth Management
Colorado
$14.4K
GBT
612
Grove Bank & Trust
Florida
$14K
KFAS
613
Keating Financial Advisory Services
Kansas
$12.8K
NFSG
614
Newbridge Financial Services Group
Florida
$12.3K
SGFG
615
Silver Grove Financial Group
New York
$12.3K
JWA
616
JFS Wealth Advisors
Pennsylvania
$12K
FMII
617
Farmers & Merchants Investments Inc
Nebraska
$11.9K
WIM
618
Westside Investment Management
California
$11.9K
IUHSA
619
Itau Unibanco Holding S.A.
Brazil
$11.8K
SS
620
SBI Securities
Japan
$11.7K
RS
621
Rakuten Securities
Japan
$11.7K
ADL
622
Asset Dedication LLC
California
$11.6K
LFA
623
Longview Financial Advisors
Alabama
$11.4K
HIIFS
624
Harel Insurance Investments & Financial Services
Israel
$11K
MWM
625
Mascoma Wealth Management
New Hampshire
$10K