$BLDR
Builders FirstSource, Inc.
XNYS•Consumer Discretionary•Retail-Lumber & Other Building Materials Dealers
$56.22
▲+1.06%+$0.590
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Plans & pricingDonateBuilders FirstSource, Inc.
XNYS•Consumer Discretionary•Retail-Lumber & Other Building Materials Dealers
Why is BLDR up today? It is at $56.22 (+1.06%), and our scanner flagged it 122 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment BLDR spikes, and full due diligence on BLDR — key stats, earnings, dilution and insider activity. Free.
Our scanner flagged $BLDR 122 times in the last 30 days. Create a free account to track $BLDR, build a watchlist, and get instant unusual-volume alerts, with a full day of premium now and 5 more when you verify your email, no card needed.
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BLDR is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 7 unusual-volume and momentum alerts on BLDR today, peaking at 35.5x its normal volume.
Likely catalystExecutive / Board Change, from an SEC filing. Read it →Latest filingSC 13G/APassive 5%+ stake updatedOct 5, 2026 · yesterdaySources: float & market cap via Polygon · short interest via FINRA · borrow & shortability via Alpaca · SSR from Reg SHO 201 · filings & dilution via SEC EDGAR · analysts via Nasdaq.
Auto-generated from public data for research and education. Not investment advice.
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Boydston Cory Jacobs Director | Acquired (grant/award) | +470 | added 1.8% | 27K | n/a | Sep 10, 26 |
Christophe Cleveland A Director | Acquired (grant/award) | +564 | added 1.5% | 39K | n/a | Sep 10, 26 |
Levy Paul S Director | Acquired (grant/award) | +1K | added <0.1% | 1.73M | n/a | Sep 10, 26 |
Hayes William B Director | Acquired (grant/award) | +583 | added 3.0% | 20K | n/a | Sep 10, 26 |
Renz Maria Director | Acquired (grant/award) | +489 | added 7.7% | 7K | n/a | Sep 10, 26 |
Oleary James Director | Acquired (grant/award) | +564 | added 0.6% | 92K | n/a | Sep 10, 26 |
Charles Dirkson R Director | Acquired (grant/award) | +470 | added 3.3% | 15K | n/a | Sep 10, 26 |
Steinke Craig Arthur Director | Acquired (grant/award) | +564 | added 0.6% | 103K | n/a | Sep 10, 26 |
Vaughn Paul Officer | Acquired (grant/award) | +3K | added 9.0% | 41K | n/a | Jul 18, 26 |
O'Brien Matthew Coley Officer | Acquired (grant/award) | +7K | n/a | 7K | n/a | Jul 18, 26 |
Vance Todd Officer | Acquired (grant/award) | +3K | added 8.6% | 43K | n/a | Jul 18, 26 |
Narayan Gayatri Officer | Sold (automatic/other) | -3K | sold 9.1% | 28K | $221K at $77.77 | Jun 13, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
Blend of news sentiment, today’s move, and community votes. Not investment advice.
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
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BLDR is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 7 unusual-volume and momentum alerts on BLDR today, peaking at 35.5x its normal volume.
BLDR last traded at $56.22, up 1.06% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
The BLDR Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged BLDR 122 times in the last 30 days.
BLDR (Builders FirstSource, Inc.) trades on XNYS, with a market cap of about $5.99B in the RETAIL-LUMBER & OTHER BUILDING MATERIALS DEALERS sector.
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge BLDR for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.
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