BLDR Builders FirstSource, Inc.

NYSE
$58.12

Builders FirstSource, Inc. (BLDR) Hedge Fund Activity

This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.

Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.

Hedge fund breadth
+6.67
24 buyers / 21 sellers
MIXED
Funds compared
45
funds with comparable BLDR positions
35 current holders · 34 prior-quarter holders
Net share change
+100.4K
+3.41M added, -3.31M cut
Position activity
11 new 13 increased 11 reduced 10 exited

Most significant moves

Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.

Fund Action Shares changed Change Est. value Portfolio wt. Score
D1 Capital Partners L.P. New +1.64M — $146.7M 0.4% 70
Point72 Asset Management, L.P. Sold Out -572.6K -100.0% $51.2M 0.0% 66
RENAISSANCE TECHNOLOGIES LLC Quant Sold Out -220.2K -100.0% $19.7M 0.0% 62
Balyasny Asset Management L.P. Sold Out -235.5K -100.0% $21.1M 0.0% 61
WORLDQUANT MILLENNIUM ADVISORS LLC Quant Sold Out -160.0K -100.0% $14.3M 0.0% 60
Verition Fund Management Event Long/Short Sold Out -228.4K -100.0% $20.4M 0.0% 59
D. E. Shaw & Co., Inc. Quant New +2.8K — $247.7K 0.0% 58
Tudor Investment Corporation Macro New +118.6K — $10.6M 0.1% 58
Capital Fund Management Quant Macro New +167.3K — $15.0M 0.1% 57
Bridgewater Associates Quant Macro Increased +47.2K +1162.5% $4.2M 0.0% 57

Most significant buyers

By move score, not size.

  • D1 Capital Partners L.P. New · +1.64M
  • D. E. Shaw & Co., Inc. New · +2.8K
  • Tudor Investment Corporation New · +118.6K
  • Capital Fund Management New · +167.3K
  • Bridgewater Associates Increased · +47.2K

Most significant sellers

By move score, not size.

  • Point72 Asset Management, L.P. Sold Out · -572.6K
  • RENAISSANCE TECHNOLOGIES LLC Sold Out · -220.2K
  • Balyasny Asset Management L.P. Sold Out · -235.5K
  • WORLDQUANT MILLENNIUM ADVISORS LLC Sold Out · -160.0K
  • Verition Fund Management Sold Out · -228.4K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
D1 Capital Partners L.P. 1 1.6M 0 +1.64M — 0.4% New 70
Point72 Asset Management, L.P. 1 0 572.6K -572.6K -100.0% 0.0% Sold Out 66
RENAISSANCE TECHNOLOGIES LLC 1 0 220.2K -220.2K -100.0% 0.0% Sold Out 62
Balyasny Asset Management L.P. 2 0 235.5K -235.5K -100.0% 0.0% Sold Out 61
WORLDQUANT MILLENNIUM ADVISORS LLC 2 0 160.0K -160.0K -100.0% 0.0% Sold Out 60
Verition Fund Management 2 0 228.4K -228.4K -100.0% 0.0% Sold Out 59
D. E. Shaw & Co., Inc. 1 2.8K 0 +2.8K — 0.0% New 58
Tudor Investment Corporation 2 118.6K 0 +118.6K — 0.1% New 58
Capital Fund Management 3 167.3K 0 +167.3K — 0.1% New 57
Bridgewater Associates 1 51.3K 4.1K +47.2K +1162.5% 0.0% Increased 57
Magnetar Capital 2 0 24.0K -24.0K -100.0% 0.0% Sold Out 57
Schonfeld Strategic Advisors 3 0 273.7K -273.7K -100.0% 0.0% Sold Out 56
Weiss Asset Management 2 7.8K 0 +7.8K — 0.0% New 54
Jain Global 3 30.9K 0 +30.9K — 0.0% New 54
Lighthouse Investment Partners 3 0 70.8K -70.8K -100.0% 0.0% Sold Out 54
Aristeia Capital 2 3.8K 0 +3.8K — 0.0% New 54
Walleye Capital 3 39.8K 0 +39.8K — 0.0% New 53
Qube Research & Technologies Ltd 2 319.3K 32.9K +286.3K +869.4% 0.0% Increased 53
CastleKnight Management 3 72.8K 0 +72.8K — 0.2% New 53
TWO SIGMA INVESTMENTS, LP 2 41.2K 6.6K +34.6K +526.8% 0.0% Increased 53
Brave Warrior Advisors 2 2.3M 2.4M -31.7K -1.3% 4.6% Reduced 53
MARSHALL WACE, LLP 2 139.6K 776.1K -636.6K -82.0% 0.0% Reduced 52
Holocene Advisors, LP 2 1.1M 562.9K +504.0K +89.5% 0.2% Increased 52
Brevan Howard Capital Management 3 0 43.9K -43.9K -100.0% 0.0% Sold Out 52
Alphadyne Asset Management 3 0 4.3K -4.3K -100.0% 0.0% Sold Out 51
Y-Intercept 4 39.9K 0 +39.9K — 0.1% New 51
Squarepoint Ops LLC 2 30.3K 2.9K +27.4K +931.6% 0.0% Increased 51
Samlyn Capital 2 249.7K 511.4K -261.6K -51.2% 0.4% Reduced 47
Edgestream Partners 4 106.7K 21.3K +85.5K +401.7% 0.3% Increased 46
Long Focus Capital Management 2 617.0K 479.0K +138.0K +28.8% 2.3% Increased 45
Quantbot Technologies 4 1.6K 0 +1.6K — 0.0% New 45
Aquatic Capital Management 4 4.2K 64.9K -60.7K -93.5% 0.0% Reduced 43
Gotham Asset Management, LLC 2 228.0K 136.8K +91.2K +66.7% 0.1% Increased 42
MILLENNIUM MANAGEMENT LLC 2 354.5K 571.3K -216.7K -37.9% 0.0% Reduced 40
Moore Capital Management 3 139.4K 241.8K -102.4K -42.4% 0.4% Reduced 39
ADAGE CAPITAL PARTNERS GP, L.L.C. 2 95.9K 65.7K +30.2K +46.0% 0.0% Increased 38
Boothbay Fund Management 4 7.7K 4.4K +3.3K +75.5% 0.0% Increased 36
Hudson Bay Capital Management 3 21.9K 40.4K -18.5K -45.8% 0.0% Reduced 36
Woodline Partners LP 2 17.4K 12.1K +5.2K +43.2% 0.0% Increased 34
Zimmer Partners 2 262.5K 332.5K -70.0K -21.1% 0.6% Reduced 34
CITADEL ADVISORS LLC 1 465.5K 537.3K -71.8K -13.4% 0.0% Reduced 32
Centiva Capital 4 2.1K 4.5K -2.4K -53.7% 0.0% Reduced 31
Cinctive Capital Management 3 187.4K 155.2K +32.2K +20.8% 0.7% Increased 30
Man Group 3 37.4K 35.1K +2.4K +6.8% 0.0% Increased 23
AQR Capital Management 3 133.1K 138.7K -5.7K -4.1% 0.0% Reduced 21

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Hedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.