Boston Partners
- SEC CIK
- 0001386060
- Latest filing
- Aug 4, 2026
SUM holding history
Summit Materials, Inc. in every 13F filed by Boston Partners, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
SUM overviewAll 13F holders of SUMFull Q2 2026 holdings
- Shares (Q1 2025)
- 0
- Sold out in Q1 2025
- Value
- $0
- % of portfolio
- 0.0%
- Quarters held
- 6
- Since Q2 2023
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q1 2025 | 0 | $0 | 0.0% | −46,197−100.0% | Sold out | Holders |
| Q4 2024 | 46,197 | $493.2K | <0.1% | +46,197 | New | Holders |
| Q3 2024 | 0 | $0 | 0.0% | −64,047−100.0% | Sold out | Holders |
| Q2 2024 | 64,047 | $533.4K | <0.1% | +46,725+269.7% | Added | Holders |
| Q1 2024 | 17,322 | $772.0K | <0.1% | −19,264−52.7% | Reduced | Holders |
| Q4 2023 | 36,586 | $415.5K | <0.1% | −5,374−12.8% | Reduced | Holders |
| Q3 2023 | 41,960 | $750.5K | <0.1% | −5,386−11.4% | Reduced | Holders |
| Q2 2023 | 47,346 | $679.4K | <0.1% | +47,346 | New | Holders |