Magnetar Financial LLC
- SEC CIK
- 0001352851
- Latest filing
- Aug 14, 2026
SUM holding history
Summit Materials, Inc. in every 13F filed by Magnetar Financial LLC, 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
- 3
- Since Q3 2023
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q1 2025 | 0 | $0 | 0.0% | −1,563,121−100.0% | Sold out | Holders |
| Q4 2024 | 1,563,121 | $79.1M | 1.8% | +1,563,121 | New | Holders |
| Q3 2024 | 0 | $0 | 0.0% | −35,063−100.0% | Sold out | Holders |
| Q2 2024 | 35,063 | $1.28M | <0.1% | +35,063 | New | Holders |
| Q4 2023 | 0 | $0 | 0.0% | −9,626−100.0% | Sold out | Holders |
| Q3 2023 | 9,626 | $299.8K | <0.1% | +9,626 | New | Holders |