Builders FirstSource, Inc.
BLDR- Exchange
- NYSE
- Industry
- Retail-Lumber & Other Building Materials Dealers
- SEC CIK
- 0001316835
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.
Holders of 5% or more of BLDR
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Builders FirstSource, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 7.50%8.47M shares | – | Apr 17, 20251 filing | Apr 17, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
4 Schedule 13D and 13G filings on Builders FirstSource, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Apr 29, 20265:11 PM ET | Vanguard Capital Management LLC | 13G | 7.20%7.97M shares | New | Mar 31, 2026 | SEC |
| Mar 26, 20264:43 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Dec 5, 20252:03 PM ET | FMR LLCand 1 other | 13G/A | 3.30%3.70M shares | −7.00 ppfrom 10.30%Below 5% | Nov 28, 2025 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 7.50%8.47M shares | – | Mar 31, 2025 | SEC |
| Feb 7, 202510:23 AM ET | FMR LLCand 1 other | 13G/A | 10.30%11.9M shares | – | Jan 31, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Builders FirstSource, Inc. shares.
No Form 144 notices for Builders FirstSource, Inc. are on file.