Atom Investors LP
- SEC CIK
- 0001738902
- Latest filing
- Aug 14, 2026
BLDR holding history
Builders FirstSource, Inc. in every 13F filed by Atom Investors LP, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
BLDR overviewAll 13F holders of BLDRFull Q2 2026 holdings
- Shares (Q2 2026)
- 6,620
- Value
- $592.4K
- % of portfolio
- 0.1%
- Quarters held
- 9
- Since Q2 2023
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 6,620 | $592.4K | 0.1% | −95,443−93.5% | Reduced | Holders |
| Q1 2026 | 102,063 | $8.40M | 0.6% | +50,902+99.5% | Added | Holders |
| Q4 2025 | 51,161 | $5.26M | 0.4% | +10,644+26.3% | Added | Holders |
| Q3 2025 | 40,517 | $4.91M | 0.4% | +40,517 | New | Holders |
| Q2 2025 | 0 | $0 | 0.0% | −2,380−100.0% | Sold out | Holders |
| Q1 2025 | 2,380 | $297.4K | <0.1% | −1,040−30.4% | Reduced | Holders |
| Q4 2024 | 3,420 | $488.8K | 0.1% | +3,420 | New | Holders |
| Q3 2024 | 0 | $0 | 0.0% | −31,543−100.0% | Sold out | Holders |
| Q2 2024 | 31,543 | $4.37M | 0.4% | +31,543 | New | Holders |
| Q1 2024 | 0 | $0 | 0.0% | −10,597−100.0% | Sold out | Holders |
| Q4 2023 | 10,597 | $1.77M | 0.3% | +10,597 | New | Holders |
| Q3 2023 | 0 | $0 | 0.0% | −4,938−100.0% | Sold out | Holders |
| Q2 2023 | 4,938 | $671.6K | 0.3% | +4,938 | New | Holders |