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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
8.85%
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
IMC Chicago
376
IMC Chicago
Illinois
$636K -$2.56M -23,967 -76%
CS
377
Candriam SCA
Luxembourg
$635K +$178K +1,670 +28%
WI
378
Westbourne Investments
Virginia
$626K
AS
379
Altshuler Shaham
Israel
$626K +$19.2K +180 +2%
Assenagon Asset Management
380
Assenagon Asset Management
Luxembourg
$624K -$221K -2,069 -21%
Walleye Trading
381
Walleye Trading
New York
$621K -$396K -3,706 -33%
NSUP
382
NLB Skladi upravljanje premozenja
$619K -$8.54K -80 -1%
Fuller & Thaler Asset Management
383
Fuller & Thaler Asset Management
California
$618K -$287K -2,688 -26%
LCS
384
Levin Capital Strategies
New York
$617K +$320K +3,000 +67%
PS
385
Principal Securities
Iowa
$607K -$22.5K -211 -3%
PAS
386
Park Avenue Securities
New York
$601K +$24.9K +233 +3%
NB
387
Norinchukin Bank
Japan
$600K +$107 +1 +0%
LCM
388
Legato Capital Management
California
$597K -$1.69M -15,826 -69%
ICP
389
Interchange Capital Partners
Pennsylvania
$588K -$44K -412 -8%
GT
390
Glenmede Trust
Pennsylvania
$587K +$48.1K +450 +7%
OAC
391
OMERS Administration Corp
Ontario, Canada
$581K +$205K +1,916 +37%
RFC
392
Regions Financial Corp
Alabama
$576K +$289K +2,710 +63%
KeyBank National Association
393
KeyBank National Association
Ohio
$575K -$35.8K -335 -5%
GC
394
Guggenheim Capital
Illinois
$571K +$442K +4,136 +148%
WSC
395
Wellington Shields & Co
New York
$562K +$4.06K +38 +0.6%
GI
396
Gradient Investments
Minnesota
$560K -$11.3K -106 -2%
MC
397
Moors & Cabot
Massachusetts
$558K -$65.5K -613 -8%
DS
398
DRW Securities
Illinois
$551K +$495K +4,631 +225%
MSU
399
Mizuho Securities USA
New York
$550K -$146K -1,367 -17%
FFA
400
Farther Finance Advisors
California
$549K -$18K -169 -2%