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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
ECP
751
Epacria Capital Partners
Colorado
-$998K -9,701 Closed
TC
752
TwinBeech Capital
New York
-$962K -9,346 Closed
JSAM
753
J. Safra Asset Management
New York
-$959K -9,325 Closed
AIM
754
Aigen Investment Management
New York
-$955K -9,286 Closed
GS
755
GTS Securities
New York
-$901K -8,756 Closed
YIH
756
Y-Intercept (HK)
Hong Kong
-$859K -8,345 Closed
AC
757
Aristeia Capital
Connecticut
-$776K -7,545 Closed
OC
758
Oppenheimer & Co
New York
-$706K -6,864 Closed
KRS
759
Kentucky Retirement Systems
Kentucky
-$701K -6,811 Closed
JSL
760
JT Stratford LLC
Georgia
-$662K -6,433 Closed
ET
761
Entropy Technologies
New York
-$638K -6,196 Closed
IPW
762
Impact Partnership Wealth
Georgia
-$635K -6,168 Closed
IFU
763
iSAM Funds (UK)
United Kingdom
-$634K -6,160 Closed
CIBC World Market
764
CIBC World Market
Ontario, Canada
-$585K -5,682 Closed
PCM
765
Prelude Capital Management
New York
-$566K -5,500 Closed
AAS
766
Ameritas Advisory Services
Nebraska
-$563K -5,470 Closed
OAM
767
Oxford Asset Management
United Kingdom
-$551K -5,358 Closed
NEI
768
Northwest & Ethical Investments
Ontario, Canada
-$542K -5,254 Closed
HAM
769
Harmony Asset Management
Arizona
-$514K -5,000 Closed
DILIC
770
Dai-ichi Life Insurance Company
Japan
-$466K -4,528 Closed
PI
771
PFG Investments
New York
-$463K -4,497 Closed
CFAM
772
Center For Asset Management
Florida
-$460K -4,469 Closed
1C
773
111 Capital
France
-$452K -4,391 Closed
BBA
774
Baader Bank Aktiengesellschaft
Germany
-$450K -4,375 Closed
RS
775
R Squared
Hong Kong
-$423K -4,113 Closed