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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
BA
451
Bridgewater Associates
Connecticut
$334K
MCM
452
MAI Capital Management
Ohio
$332K
NA
453
NewEdge Advisors
Louisiana
$330K
FG
454
Formula Growth
Quebec, Canada
$329K
GF
455
Gabelli Funds
New York
$329K
GVAG
456
Great Valley Advisor Group
Delaware
$327K
PPG
457
Peak Planning Group
Colorado
$327K
WWA
458
Wisconsin Wealth Advisors
Wisconsin
$323K
AV
459
Alamea Verwaltungs
New Jersey
$321K
OWP
460
Obermeyer Wealth Partners
Colorado
$316K
YDMI
461
Y.D. More Investments
Israel
$314K
MM
462
MQS Management
New York
$314K
Wealth Enhancement Advisory Services
463
Wealth Enhancement Advisory Services
Minnesota
$314K
MG
464
Marex Group
$313K
BW
465
Blalock Williams
Alabama
$312K
PEAK6
466
PEAK6
Illinois
$311K
OP
467
Oslo Pensjonsforsikring
$308K
RMC
468
Ring Mountain Capital
California
$300K
SCM
469
Sterling Capital Management
North Carolina
$300K
NICM
470
Neo Ivy Capital Management
New York
$296K
CFB
471
Cullen/Frost Bankers
Texas
$293K
Jacobs Levy Equity Management
472
Jacobs Levy Equity Management
New Jersey
$292K
Lido Advisors
473
Lido Advisors
California
$292K
NMIMC
474
Northwestern Mutual Investment Management Company
Wisconsin
$291K
MWA
475
Medallion Wealth Advisors
Connecticut
$288K