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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

61% more call options, than puts

Call options by funds: $178M | Put options by funds: $111M

15% more repeat investments, than reductions

Existing positions increased: 274 | Existing positions reduced: 239

0.85% more ownership

Funds ownership: 95.09%95.93% (+0.85%)

0% more funds holding in top 10

Funds holding in top 10: 1313 (0)

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
-46
Holders Change %
-6.01%
% of All Funds
8.86%
Holding in Top 10
13
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.16%
New
104
Increased
274
Reduced
239
Closed
135
Calls
$178M
Puts
$111M
Net Calls
+$67.3M
Net Calls Change
+$65M
Name Holding Trade Value Shares
Change
Change in
Stake
T. Rowe Price Associates
101
T. Rowe Price Associates
Maryland
$13.6M -$196K -1,838 -1%
California State Teachers Retirement System (CalSTRS)
102
California State Teachers Retirement System (CalSTRS)
California
$13.6M -$161K -1,507 -0.9%
WHG
103
Westwood Holdings Group
Texas
$13.5M +$17.5M +164,154 New
WorldQuant Millennium Advisors
104
WorldQuant Millennium Advisors
New York
$13.2M +$999K +9,350 +6%
SCM
105
Stadium Capital Management
Connecticut
$13.1M
Franklin Resources
106
Franklin Resources
California
$12.8M -$180M -1,681,292 -92%
CCM
107
Cinctive Capital Management
New York
$12.8M +$13.5M +126,469 +441%
Lord, Abbett & Co
108
Lord, Abbett & Co
New Jersey
$12.4M -$20.6M -192,988 -56%
First Trust Advisors
109
First Trust Advisors
Illinois
$12.4M +$678K +6,353 +4%
Parnassus Investments
110
Parnassus Investments
California
$12.3M +$15.9M +149,316 New
DZ Bank
111
DZ Bank
Germany
$12.2M +$14.9M +139,442 +1,676%
New York State Common Retirement Fund
112
New York State Common Retirement Fund
New York
$11.8M
SIC
113
Schwartz Investment Counsel
Michigan
$11.8M +$5.1M +47,800 +50%
AQR Capital Management
114
AQR Capital Management
Connecticut
$11.4M +$3.01M +28,212 +26%
GAM
115
Gotham Asset Management
New York
$11.3M -$123K -1,150 -0.8%
PAIM
116
Punch & Associates Investment Management
Minnesota
$10.6M +$52.6K +493 +0.4%
Susquehanna International Group
117
Susquehanna International Group
Pennsylvania
$10.3M +$6.94M +64,957 +107%
HB
118
Hauser Brothers
Germany
$10.3M
Principal Financial Group
119
Principal Financial Group
Iowa
$10.1M +$130K +1,222 +1%
ZIG
120
Zurich Insurance Group
Switzerland
$9.39M +$12.2M +114,060 New
Korea Investment Corp
121
Korea Investment Corp
South Korea
$8.79M +$4.13M +38,708 +57%
State Board of Administration of Florida Retirement System
122
State Board of Administration of Florida Retirement System
Florida
$8.65M -$375K -3,508 -3%
SC
123
SummitTX Capital
Texas
$8.63M +$11.2M +104,847 New
MLIM
124
Mountain Lake Investment Management
Florida
$8.62M +$2.21M +20,697 +25%
AI
125
Atom Investors
Texas
$8.4M +$5.44M +50,902 +99%