Company · Ownership research

Builders FirstSource, Inc. BLDR

CIK 0001316835 · CUSIP 12008R107

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 12008R107 (BLDR), not CUSIP 12008R907 (BLDR), CUSIP 12008R957 (BLDR), and does not merge CUSIPs.

This page lists the top 20 of 727 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$721.32M 8,761,277 shares	0.01%	-115.14K(-1.30%)Reduced	SEC filing ↗ May 13, 2026	▾
02	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$578.54M 7,027,074 shares	0.01%	—	SEC filing ↗ May 15, 2026	▾
03	STATE STREET CORP CIK 93751 · View history	$421.54M 5,120,090 shares	0.01%	+11.97K(+0.20%)Added	SEC filing ↗ May 15, 2026	▾
04	VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · Amended · View history	$355.57M 4,318,795 shares	0.02%	—	SEC filing ↗ May 8, 2026	▾
05	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$302.93M 3,679,457 shares	0.06%	+362.66K(+10.90%)Added	SEC filing ↗ May 15, 2026	▾
06	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$244.30M 2,967,744 shares	0.05%	+325.94K(+12.30%)Added	SEC filing ↗ May 7, 2026	▾
07	Capital International Investors CIK 1562230 · View history	$242.31M 2,943,131 shares	0.06%	+416.45K(+16.50%)Added	SEC filing ↗ May 13, 2026	▾
08	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$236.56M 2,884,519 shares	0.01%	+66.56K(+2.40%)Added	SEC filing ↗ May 15, 2026	▾
09	SANDS CAPITAL MANAGEMENT, LLC CIK 1020066 · View history	$215.79M 2,621,085 shares	0.85%	-136.88K(-5.00%)Reduced	SEC filing ↗ May 8, 2026	▾
10	Invesco Ltd. CIK 914208 · Amended · View history	$214.41M 2,604,322 shares	0.02%	+502.24K(+23.90%)Added	SEC filing ↗ May 12, 2026	▾
11	Brave Warrior Advisors, LLC CIK 1553733 · View history	$195.31M 2,372,292 shares	4.83%	-6.85K(-0.30%)Reduced	SEC filing ↗ May 15, 2026	▾
12	Coliseum Capital Management, LLC CIK 1409751 · View history	$172.33M 2,093,218 shares	14.13%	+1.31M(+168.10%)Added	SEC filing ↗ May 15, 2026	▾
13	DIAMOND HILL CAPITAL MANAGEMENT INC CIK 1217541 · View history	$145.22M 1,763,934 shares	0.91%	-108.77K(-5.80%)Reduced	SEC filing ↗ May 7, 2026	▾
14	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$141.34M 1,716,804 shares	0.02%	+719.60K(+72.20%)Added	SEC filing ↗ May 15, 2026	▾
15	Focus Partners Wealth CIK 1542153 · View history	$136.93M 1,663,200 shares	0.15%	+970.55K(+140.10%)Added	SEC filing ↗ May 15, 2026	▾
16	Boston Partners CIK 1386060 · View history	$131.91M 1,602,360 shares	0.14%	-188.49K(-10.50%)Reduced	SEC filing ↗ May 11, 2026	▾
17	MORGAN STANLEY CIK 895421 · View history	$116.35M 1,413,231 shares	0.01%	-130.49K(-8.50%)Reduced	SEC filing ↗ May 15, 2026	▾
18	Pictet Asset Management Holding SA CIK 1993888 · View history	$113.48M 1,378,332 shares	0.12%	+588.99K(+74.60%)Added	SEC filing ↗ Apr 22, 2026	▾
19	FMR LLC CIK 315066 · View history	$104.25M 1,266,304 shares	0.01%	-2.21M(-63.60%)Reduced	SEC filing ↗ May 15, 2026	▾
20	DEUTSCHE BANK AG\ CIK 948046 · View history	$93.40M 1,134,505 shares	0.03%	+298.43K(+35.70%)Added	SEC filing ↗ May 6, 2026	▾

Showing 20 / 727 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

727

Cancelled or null records excluded

Disclosed shares

106,130,935

Not deduplicated across managers

Disclosed value

$8.74B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Builders FirstSource, Inc. · Q1 2026

Explore all 727 reporting institutions.

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.