Stocks › BLDR
Builders FirstSource, Inc.
BLDR·NYSE·
United States·USD
United States·USD$56.22
+0.59 (+1.06%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
BLDR
Builders FirstSource, Inc. · NYSE
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
BLDRS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of BLDR by members of U.S. Congress · 39 on record · 7 in the last 12 months
Whale Activity
Position changes in BLDR reported for 2026-06-30 by 20 tracked institutional filers
- Increased2
- New1
- Held0
- Decreased5
- Closed2
- No prior filing10
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 7.8M | $700.9M | decreased |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.9M | $613.4M | decreased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.2M | $372.4M | decreased |
| SANDS CAPITAL MANAGEMENT, LLC | 2.3M | $204.3M | — |
| LOEWS CORP | 780.0K | $69.8M | — |
| CITADEL ADVISORS LLC | 465.5K | $41.7M | decreased |
| MILLENNIUM MANAGEMENT LLC | 354.5K | $31.7M | decreased |
| Long Pond Capital, LP | 245.8K | $22.0M | — |
| LITTLEJOHN & CO LLC | 170.7K | $15.3M | — |
| Hauser Brothers GmbH | 128.9K | $11.5M | — |
| Giverny Capital Inc. | 91.5K | $8.2M | — |
| CNA FINANCIAL CORP | 55.0K | $4.9M | — |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by BLDR insiders, by quarter · Form 4
Recent Insider Transactions
2,265 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Narayan GayatriPresident - Tech & Digital | Tax withholding | −2,842 | $77.77 | $221K | Jun 13, 2026 | Form 4 ↗ |
| Herron Stephen JChief Operating Officer | Gift | −850 | $0.00 | $0 | Jun 5, 2026 | Form 4 ↗ |
| Hiller MichaelCOO-Designate | Gift | −900 | $0.00 | $0 | Jun 4, 2026 | Form 4 ↗ |
| ALEXANDER MARK ADirector | Grant / award | +409 | $76.26 | $31K | Jun 1, 2026 | Form 4 ↗ |
| LEVY PAUL SDirector | Grant / award | +1,049 | $76.26 | $80K | Jun 1, 2026 | Form 4 ↗ |
| Boydston Cory JacobsDirector | Grant / award | +409 | $76.26 | $31K | Jun 1, 2026 | Form 4 ↗ |
| Renz MariaDirector | Grant / award | +426 | $76.26 | $32K | Jun 1, 2026 | Form 4 ↗ |
| OLEARY JAMESDirector | Grant / award | +491 | $76.26 | $37K | Jun 1, 2026 | Form 4 ↗ |
| CHRISTOPHE CLEVELAND ADirector | Grant / award | +491 | $76.26 | $37K | Jun 1, 2026 | Form 4 ↗ |
| Hayes William BDirector | Grant / award | +508 | $76.26 | $39K | Jun 1, 2026 | Form 4 ↗ |
| Charles Dirkson RDirector | Grant / award | +409 | $76.26 | $31K | Jun 1, 2026 | Form 4 ↗ |
| Steinke Craig ArthurDirector | Grant / award | +491 | $76.26 | $37K | Jun 1, 2026 | Form 4 ↗ |
| LEVY PAUL SDirector | Grant / award | +2,558 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| Hayes William BDirector | Grant / award | +2,558 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| Renz MariaDirector | Grant / award | +2,558 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| CHRISTOPHE CLEVELAND ADirector | Grant / award | +2,558 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| ALEXANDER MARK ADirector | Grant / award | +2,558 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| Rush David EDirector | Grant / award | +2,558 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| MILGRIM BRETT NDirector | Grant / award | +2,558 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| Steinke Craig ArthurDirector | Grant / award | +2,558 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding BLDR · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 3.2M | $290.4M | 0.01% | Jun 30, 2026 |
| VANGUARD 500 INDEX FUND VANGUARD INDEX FUNDS | 2.8M | $249.2M | 0.01% | Jun 30, 2026 |
| American Funds Fundamental Investors | 2.6M | $230.5M | 0.13% | Jun 30, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 2.3M | $209.6M | 0.11% | Jun 30, 2026 |
| Invesco S&P 500 Equal Weight ETF Invesco Exchange-Traded Fund Trust | 2.5M | $165.9M | 0.17% | Jul 31, 2026 |
| VANGUARD SMALL-CAP VALUE INDEX FUND VANGUARD INDEX FUNDS | 1.5M | $132.8M | 0.20% | Jun 30, 2026 |
| iShares Core S&P 500 ETF iShares Trust | 1.5M | $132.4M | 0.01% | Jun 30, 2026 |
| VANGUARD WINDSOR FUND VANGUARD WINDSOR FUNDS | 1.9M | $127.7M | 0.51% | Jul 31, 2026 |
| State Street(R) SPDR(R) S&P 500(R) ETF Trust | 1.3M | $116.6M | 0.01% | Jun 30, 2026 |
| Fidelity 500 Index Fund Fidelity Concord Street Trust | 1.4M | $107.9M | 0.01% | May 31, 2026 |
Mutual funds and ETFs whose N-PORT filings list BLDR's shares (CUSIP 12008R107), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- BlackRock, Inc.SCHEDULE 13G/A · passive (13G) · 12.9M shares12.0%
Oct 5, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming Builders FirstSource, Inc. as client
No lobbying filings found naming Builders FirstSource, Inc. as the client.
Government Contracts
Federal awards to Builders FirstSource, Inc. · USAspending
No federal contract awards found for Builders FirstSource, Inc..
U.S. Patents
Recent USPTO applications naming Builders FirstSource, Inc.
No USPTO patent applications found for Builders FirstSource, Inc..
Annual Financials
From BLDR's 10-K filings · XBRL
No annual XBRL figures on record for BLDR. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in BLDR's price history.
Material Events (8-K)
Corporate events filed with the SEC
About Builders FirstSource, Inc.
From SEC EDGAR company records
Industry (SIC 5211)Retail-Lumber & Other Building Materials Dealers
SectorConsumer
HeadquartersIRVING, TX
IncorporatedDE
SEC CIK0001316835 ↗