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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
DekaBank Deutsche Girozentrale
176
DekaBank Deutsche Girozentrale
Germany
$4.38M
WIA
177
Westbourne Investment Advisors
Maryland
$4.32M +$246K +2,306 +5%
VIA
178
Vanguard Investments Australia
Australia
$4.23M +$5.49M +51,387 New
SG Americas Securities
179
SG Americas Securities
New York
$4.16M -$6.61M -61,929 -55%
Canada Life
180
Canada Life
Manitoba, Canada
$4.11M -$190K -1,777 -3%
Nomura Asset Management
181
Nomura Asset Management
Japan
$3.99M +$96.9K +907 +2%
AWG
182
Altus Wealth Group
Colorado
$3.96M +$290K +2,718 +6%
DIS
183
Diversified Investment Strategies
Louisiana
$3.92M +$5.09M +47,620 New
Asset Management One
184
Asset Management One
Japan
$3.91M +$308K +2,882 +6%
DIA
185
Dana Investment Advisors
Wisconsin
$3.9M +$825K +7,727 +19%
Treasurer of the State of North Carolina
186
Treasurer of the State of North Carolina
North Carolina
$3.82M +$106K +993 +2%
Commonwealth Equity Services
187
Commonwealth Equity Services
Massachusetts
$3.8M +$3.25M +30,433 +194%
BT
188
Banque Transatlantique
France
$3.77M +$87.2K +817 +2%
TRSOTSOK
189
Teachers Retirement System of the State of Kentucky
Kentucky
$3.74M
Mitsubishi UFJ Trust & Banking
190
Mitsubishi UFJ Trust & Banking
Japan
$3.69M -$512K -4,796 -10%
WTC
191
WhitTier Trust Company
Nevada
$3.65M -$2.83M -26,516 -37%
BHCM
192
Brevan Howard Capital Management
Jersey
$3.62M +$1.64M +15,350 +54%
OWIM
193
Old West Investment Management
California
$3.48M -$8.63M -80,796 -66%
Cetera Investment Advisers
194
Cetera Investment Advisers
Illinois
$3.39M -$857K -8,025 -16%
CBU
195
CIBC Bancorp USA
Illinois
$3.38M +$4.39M +41,081 New
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
196
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$3.35M +$3.87M +36,277 +830%
Hudson Bay Capital Management
197
Hudson Bay Capital Management
Connecticut
$3.32M +$1.6M +15,000 +59%
MML Investors Services
198
MML Investors Services
Massachusetts
$3.31M -$1.74M -16,256 -29%
OCM
199
Occam Crest Management
Connecticut
$3.25M +$3.2M +30,000 +316%
KK
200
KLP Kapitalforvaltning
Norway
$3.12M