CapitolRadar tracks every publicly disclosed BLDR trade by US congress members and corporate insiders: 20 disclosed trades (11 buys, 9 sells) by 2 tracked traders, from 2020-06-03 to 2026-09-25. Updated daily from official filings.
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Builders FirstSource, Inc. (BLDR) — Basic Materials · Construction Materials, market cap about $5.4B.
CapitolRadar analysis
9 tracked trades, all tied to one trader
9 trades in Builders FirstSource, Inc. (BLDR) were tracked from January 21, 2022 through July 7, 2026: 6 buys and 3 sells. Every transaction was associated with a single distinct trader, Ro Khanna, so the record reflects one person’s disclosed activity rather than a broader pattern across multiple congressional traders. Khanna’s most recent tracked BLDR buy was dated July 7, 2026.
The balance of activity leans toward purchases, with buys representing six of the nine trades. However, the sample is small and concentrated entirely in one trader. That limits what can be inferred from the buy-to-sell split or from changes in activity over time.
4 trades in 2022 Q2 marked the busiest quarter
4 trades occurred in 2022 Q2, comprising two buys and two sells. The other active quarters each contained one transaction: a buy in 2022 Q1, a buy in 2022 Q4, a sell in 2025 Q3, a buy in 2026 Q2 and a buy in 2026 Q3. The quarterly history is therefore uneven, with half of the three tracked sells occurring alongside two buys in 2022 Q2 and the remaining activity spread across five single-trade quarters.
Congressional transaction reports can carry a 45-day disclosure lag, so filing visibility may trail the underlying transaction date. Any transaction amounts disclosed as ranges should also be treated as estimates rather than exact dollar values.
6 other tickers appeared among the same buyer’s purchases
1 buyer who purchased BLDR also bought each of AME, BK, CMG, DIS, FTNT and IP. Because BLDR has only one tracked buyer, every overlap points back to the same individual rather than showing common interest among several buyers. These co-purchases provide limited context on the trader’s wider disclosed activity, but the one-person sample does not establish a shared sector preference or a repeatable group pattern. BLDR is classified in Basic Materials and the Construction Materials industry.
Analysis written from the tracked record on 2026-08-31; it is refreshed whenever the underlying numbers change.
Activity by quarter
| Quarter | Disclosed trades | Buys | Sells |
|---|---|---|---|
| 2026 Q3 | 5 | 2 | 3 |
| 2026 Q2 | 1 | 1 | 0 |
| 2025 Q3 | 1 | 0 | 1 |
| 2022 Q4 | 2 | 1 | 1 |
| 2022 Q2 | 4 | 2 | 2 |
| 2022 Q1 | 1 | 1 | 0 |
| 2021 Q3 | 1 | 0 | 1 |
| 2021 Q2 | 1 | 1 | 0 |
Who is buying BLDR?
Disclosed trades in BLDR
| Date | Who | Type | Amount | 30d vs SPY |
|---|---|---|---|---|
| 2026-09-25 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2026-09-11 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2026-09-04 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2026-08-10 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2026-07-07 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2026-05-01 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2025-08-13 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2022-11-30 | Susie Lee | sell | $1,001 - $15,000 | — |
| 2022-11-02 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2022-06-27 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2022-05-23 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2022-05-10 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2022-04-11 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2022-01-21 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2021-08-17 | Susie Lee | sell | $1,001 - $15,000 | — |
| 2021-05-14 | Susie Lee | buy | $1,001 - $15,000 | — |
| 2021-02-09 | Susie Lee | buy | $1,001 - $15,000 | — |
| 2020-10-22 | Susie Lee | sell | $1,001 - $15,000 | — |
| 2020-06-05 | Susie Lee | buy | $1,001 - $15,000 | — |
| 2020-06-03 | Susie Lee | buy | $1,001 - $15,000 | — |
CapitolRadar signal history
NEW PICK 2026-10-11
Rep. Ro Khanna disclosed buying $1,001–$15,000 of Builders FirstSource (BLDR) stock. The panel passed mainly because Khanna has no verified trading history against the S&P 500, so the purchase is an unproven signal; no other tracked buyers added support. A verified record of similar purchases later outperforming the market would have provided the strongest evidence to change the verdict.
These buyers also bought
Other stocks the tracked buyers of BLDR disclosed buying in the last six months: AMD (1) · BAX (1) · CB (1) · COHR (1) · DAL (1) · ETN (1).
About Builders FirstSource, Inc.
Builders FirstSource, Inc. engages in the supply and manufacture of building materials, manufactured components, and construction services to professional homebuilders, sub-contractors, remodelers, and consumers. Its products include factory-built roof and floor trusses, wall panels and stairs, vinyl windows, custom millwork and trim, and engineered wood. The company was founded by Kevin P. O'Meara, Donald F. McAleenan and John D. Roach in March 1998 and is headquartered in Irving, TX.
Frequently asked questions
Which politicians bought BLDR most?
Ro Khanna leads with 7 disclosed buys, followed by Susie Lee.
How current is this page?
It re-renders from the tracked record on every view and new filings are ingested daily — but STOCK Act disclosures can lag the trade by up to 45 days, so the most recent weeks are always incomplete.
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CapitolRadar tracks publicly disclosed trades (STOCK Act filings and SEC Form 4). Disclosures can lag the trade by up to 45 days. Backtests measure past disclosed buys against the S&P 500 and do not predict future results. Everything on this page is impersonal information for your own research — not investment advice.