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Builders Firstsource Inc
BLDR
Holders
2
Combined Value
$18.35M
Combined Shares
222,897
Current Price
$77.77
52W High
$151.03
vs 52W High
−48.5%
Investor Activity Chart
Quarterly buys (▲) and sells (▼) by tracked investors. Click a marker to view that investor's portfolio; hover for details. Price line is implied from 13F filings (value ÷ shares), not market data.
Held By
Tracked investors currently holding this security, based on each investor's most recent 13F filing. Gain compares the current market price to each investor's estimated average buy price.
| Investor | Value | % of Portfolio | Avg Buy Price | Gain | Last Activity | As of |
|---|---|---|---|---|---|---|
| Jim Simons - Renaissance Technologies | $18.13M | 0.03% | ~$102.89 | −24.4% | SELL Q1 2026 | Q1 2026 |
| George Soros - Soros Fund Management | $218.7K | 0.00% | ~$102.89 | −24.4% | SELL Q1 2026 | Q1 2026 |
Recent Activity
Latest position changes by tracked investors. Prices are estimates implied from 13F filings.
Ownership History
Aggregate position across all tracked investors per quarter (options excluded). Implied price is the reported value divided by shares held.
| Period | Holders | Total Shares | Δ Shares | Total Value | Implied Price |
|---|---|---|---|---|---|
| Q1 2026 | 2 | 222,897 | -59.1% | $18.35M | $82.33 |
| Q4 2025 | 2 | 544,569 | +56.8% | $56.03M | $102.89 |
| Q2 2025 | 2 | 347,406 | +398.9% | $40.54M | $116.69 |
| Q4 2024 | 1 | 69,641 | +141.8% | $9.95M | $142.93 |
| Q3 2024 | 1 | 28,800 | -69.9% | $5.58M | $193.86 |
| Q2 2024 | 2 | 95,583 | — | $13.23M | $138.41 |