Builders FirstSource, Inc.

BLDR

Exchange: NYSE
Industry: Retail-Lumber & Other Building Materials Dealers
SEC CIK: 0001316835

SEC filings (opens in a new tab)

No open-market purchases or sales by Builders FirstSource, Inc. insiders were filed in the last 90 days; 671 institutions reported holding it in 13F filings for Q2 2026, worth $9.63B in total; 3 superinvestors hold it, including D1 Capital Partners and Semper Augustus.

13F holders, Q1 2026

Institutional positions in Builders FirstSource, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders: 726; −28 vs. Q4 2025
Shares held: 106.1M; +14.5M (+15.8%) vs. Q4 2025
Total value: $8.74B; −$698.3M (−7.4%) vs. Q4 2025
New holders: 105; 277 more added
Sold out: 133; 241 more reduced

14 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting BLDR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 726 institutions

Value heldQ1 2026: $8.74B

Institutions holding BLDR and their total value by quarter
Quarter	Holders	Value
Q2 2026	671	$9.63B
Q1 2026	726	$8.74B
Q4 2025	768	$10.8B
Q3 2025	778	$13.6B
Q2 2025	776	$12.7B
Q1 2025	786	$13.7B
Q4 2024	819	$15.6B
Q3 2024	832	$21.4B
Q2 2024	776	$15.1B
Q1 2024	859	$23.4B
Q4 2023	745	$19.3B
Q3 2023	675	$14.6B
Q2 2023	662	$16.1B
Q1 2023	544	$11.5B
Q4 2022	518	$9.03B
Q3 2022	490	$8.81B
Q2 2022	491	$8.58B
Q1 2022	509	$11.1B
Q4 2021	494	$15.0B
Q3 2021	404	$10.5B
Q2 2021	403	$8.75B
Q1 2021	380	$9.58B

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Builders FirstSource, Inc.; share changes are against Q4 2025.

Institutions holding BLDR in Q1 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
Onefund, LLC	305	$24.7K	0.02%	−49−13.8%	Reduced
Bank of New Hampshire	264	$21.7K	0.00%	+264	New
Measured Wealth Private Client Group, LLC	262	$21.6K	0.01%	+262	New
Towarzystwo Funduszy Inwestycyjnych Pzu SA	250	$20.6K	0.01%	00.0%	Unchanged
Spire Wealth Management	248	$20.4K	0.00%	−891−78.2%	Reduced
Bell Investment Advisors, Inc	228	$18.8K	0.00%	−9−3.8%	Reduced
Ramirez Asset Management, Inc.	200	$16.5K	0.00%	−300−60.0%	Reduced
Basepoint Wealth LLC	200	$16.5K	0.01%	00.0%	Unchanged
ZRC Wealth Management, LLC	200	$16.5K	0.01%	+200	New
Rosenberg Matthew Hamilton	188	$15.5K	0.00%	00.0%	Unchanged
Mather Group, LLC.	185	$15.2K	0.00%	+185	New
Entrust Financial LLC	180	$14.8K	0.01%	00.0%	Unchanged
Thurston, Springer, Miller, Herd & Titak, Inc.	180	$14.8K	0.01%	00.0%	Unchanged
Geneos Wealth Management Inc.	175	$14.4K	0.00%	−325−65.0%	Reduced
Grove Bank & Trust	170	$14.0K	0.00%	+130+325.0%	Added
Bullock Wealth Management Group	158	$12.8K	0.01%	00.0%	Unchanged
Keating Financial Advisory Services, Inc.	155	$12.8K	0.00%	+92+146.0%	Added
Newbridge Financial Services Group, Inc.	150	$12.3K	0.00%	00.0%	Unchanged
Silver Grove Financial Group, Inc.	150	$12.3K	0.01%	+150	New
JFS Wealth Advisors, LLC	146	$12.0K	0.00%	−22−13.1%	Reduced
Farmers & Merchants Investments Inc	145	$11.9K	0.00%	+67+85.9%	Added
Westside Investment Management, Inc.	150	$11.9K	0.00%	00.0%	Unchanged
Itau Unibanco Holding S.A.	143	$11.8K	0.00%	−86−37.6%	Reduced
SBI Securities Co., Ltd.	142	$11.7K	0.00%	−2−1.4%	Reduced
Rakuten Securities, Inc.	142	$11.7K	0.00%	+10+7.6%	Added
Asset Dedication, LLC	141	$11.6K	0.00%	+38+36.9%	Added
Longview Financial Advisors, Inc.	138	$11.4K	0.01%	+138	New
Harel Insurance Investments & Financial Services Ltd.	135	$11.0K	0.00%	+14+11.6%	Added
Mascoma Wealth Management LLC	122	$10.0K	0.00%	00.0%	Unchanged
Owl Creek Wealth Partners LLC	120	$9.88K	0.00%	+120	New
Cromwell Holdings LLC	115	$9.47K	0.01%	−127−52.5%	Reduced
Key Financial Inc	110	$9.06K	0.00%	−3−2.7%	Reduced
TD Private Client Wealth LLC	110	$9.06K	0.00%	+110	New
Legacy Wealth Managment, LLC	106	$8.73K	0.00%	−63−37.3%	Reduced
Creative Financial Designs Inc	101	$8.31K	0.00%	00.0%	Unchanged
Smallwood Wealth Investment Management, LLC	100	$8.23K	0.00%	00.0%	Unchanged
Strategic Wealth Partners, Ltd.	100	$8.21K	0.00%	+30+42.9%	Added
Bartlett & Co. Wealth Management LLC	110	$8.11K	0.00%	−24−17.9%	Reduced
Private Wealth Management Group, LLC	90	$7.41K	0.00%	+3+3.4%	Added
Fortitude Family Office, LLC	90	$7.41K	0.00%	+56+164.7%	Added
GW&K Investment Management, LLC	84	$7.00K	0.00%	−3−3.4%	Reduced
Wealth Enhancement Trust Services, Inc.	81	$6.67K	0.00%	00.0%	Unchanged
LRI Investments, LLC	75	$6.17K	0.00%	00.0%	Unchanged
LGT Financial Advisors LLC	74	$6.09K	0.03%	+74	New
Meeder Asset Management Inc	70	$5.76K	0.00%	−2−2.8%	Reduced
Quent Capital, LLC	70	$5.76K	0.00%	00.0%	Unchanged
Costello Asset Management, INC	64	$5.27K	0.00%	+32+100.0%	Added
Avion Wealth	72	$5.00K	0.00%	00.0%	Unchanged
WPG Advisers, LLC	57	$4.69K	0.00%	−45−44.1%	Reduced
Rothschild Investment LLC	50	$4.12K	0.00%	+22+78.6%	Added
MCF Advisors LLC	50	$4.12K	0.00%	+50	New
Vaughan Nelson Investment Management, L.P.	50	$4.12K	0.00%	00.0%	Unchanged
Arlington Trust Co LLC	48	$3.95K	0.00%	+48	New
WealthCollab, LLC	47	$3.87K	0.00%	00.0%	Unchanged
Cassaday & Co Wealth Management LLC	45	$3.71K	0.00%	+45	New
Kozak & Associates, Inc.	40	$3.50K	0.00%	00.0%	Unchanged
Burk Holdings LLC	42	$3.46K	0.00%	+42	New
Front Row Advisors LLC	38	$3.13K	0.00%	00.0%	Unchanged
Cranbrook Wealth Management, LLC	37	$3.05K	0.00%	00.0%	Unchanged
Prestige Wealth Management Group LLC	37	$3.05K	0.00%	00.0%	Unchanged
Fairway Wealth LLC	37	$3.05K	0.00%	00.0%	Unchanged
DiNuzzo Private Wealth, Inc.	31	$2.55K	0.00%	+3+10.7%	Added
Kilter Group LLC	31	$2.55K	0.00%	+26+520.0%	Added
Migdal Insurance & Financial Holdings Ltd.	31	$2.55K	0.00%	+31	New
SJS Investment Consulting Inc.	28	$2.31K	0.00%	00.0%	Unchanged
CoreCap Advisors, LLC	28	$2.31K	0.00%	−5−15.2%	Reduced
Sachetta, LLC	27	$2.22K	0.00%	+22+440.0%	Added
Twin Peaks Wealth Advisors, LLC	27	$2.22K	0.00%	+27	New
Golden State Equity Partners	27	$2.22K	0.00%	+27	New
Capital Advisors, Ltd. LLC	30	$2.00K	0.00%	00.0%	Unchanged
Torren Management, LLC	24	$1.98K	0.00%	−399−94.3%	Reduced
AdvisorNet Financial, Inc	24	$1.98K	0.00%	−7−22.6%	Reduced
Rialto Wealth Management, LLC	23	$1.89K	0.00%	+16+228.6%	Added
JPL Wealth Management, LLC	23	$1.89K	0.00%	+23	New
Golden State Wealth Management, LLC	20	$1.65K	0.00%	00.0%	Unchanged
Gill Capital Partners, LLC	20	$1.65K	0.00%	+20	New
Avalon Trust Co	20	$1.65K	0.00%	+20	New
Bay Harbor Wealth Management, LLC	20	$1.65K	0.00%	+11+122.2%	Added
Clear Street Markets LLC	18	$1.48K	0.00%	−147−89.1%	Reduced
Abound Wealth Management	17	$1.40K	0.00%	00.0%	Unchanged
Dunhill Financial, LLC	15	$1.30K	0.00%	+12+400.0%	Added
Winch Advisory Services, LLC	15	$1.24K	0.00%	00.0%	Unchanged
Ameriflex Group, Inc.	14	$1.15K	0.00%	−172−92.5%	Reduced
Bruce G. Allen Investments, LLC	13	$1.07K	0.00%	00.0%	Unchanged
Hager Investment Management Services, LLC	13	$1.07K	0.00%	00.0%	Unchanged
Park Place Capital Corp	13	$1.07K	0.00%	+13	New
Annis Gardner Whiting Capital Advisors, LLC	12	$988	0.00%	−6−33.3%	Reduced
Aspect Partners, LLC	12	$988	0.00%	00.0%	Unchanged
Caitlin John, LLC	11	$906	0.00%	+11	New
Activest Wealth Management	10	$823	0.00%	−72−87.8%	Reduced
Portus Wealth Advisors, LLC	10	$823	0.00%	+10	New
UMA Financial Services, Inc.	9	$741	0.00%	−5−35.7%	Reduced
Highline Wealth Partners LLC	9	$741	0.00%	+9	New
Ares Financial Consulting, LLC	9	$729	0.00%	00.0%	Unchanged
Clayton Financial Group LLC	7	$577	0.00%	00.0%	Unchanged
Whipplewood Advisors, LLC	7	$576	0.00%	+7	New
RMG Wealth Management LLC	7	$524	0.00%	+7	New
First Horizon Corp	6	$494	0.00%	−27−81.8%	Reduced
MV Capital Management, Inc.	6	$494	0.00%	−4−40.0%	Reduced
Colonial Trust Co	6	$494	0.00%	00.0%	Unchanged