← Super investors
BLDR
Builders Firstsource Inc
5 super-investor ownerscombined $267Mlargest position 4.8%
2 NEW
Cohort owners over time
2019Q4 → 2026Q1How many of the cohort members held this stock each quarter.
Now: 4
Peak: 5
Owners (5) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Glenn Greenberg | 4.8% | 5q | $195M | 2,372,292 |
| 2 | Joel Greenblatt | <0.1% | 40q | $44M | 537,269 |
| 3 | Christopher Bloomstran | 2.2% | — 1q | $19M | 228,210 |
| 4 | Francois Rochon | 0.3% | 5q | $8M | 91,813 |
| 5 | Bill Miller | 0.4% | 6q | $2M | 18,893 |
Recent activity (2)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Bill Miller | NEW | 0.4% | +100% | $2M | May 15, 2026 |
| Christopher Bloomstran | NEW | 2.2% | +100% | $19M | May 15, 2026 |
Long US equity 13F-HR filings only. CUSIP 12008R107. Not investment advice.