Whitebox Advisors LLC
- SEC CIK
- 0001257391
- Latest filing
- Aug 14, 2026
SIRI holding history
Sirius XM Holdings Inc. in every 13F filed by Whitebox Advisors LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
SIRI overviewAll 13F holders of SIRIFull Q2 2026 holdings
- Shares (Q2 2026)
- 74,443
- Value
- $2.20M
- % of portfolio
- <0.1%
- Quarters held
- 12
- Since Q2 2021
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 74,443 | $2.20M | <0.1% | −79,500−51.6% | Reduced | Holders |
| Q1 2026 | 153,943 | $3.55M | 0.1% | −17,000−9.9% | Reduced | Holders |
| Q4 2025 | 170,943 | $3.42M | 0.1% | +5,000+3.0% | Added | Holders |
| Q3 2025 | 165,943 | $3.86M | 0.1% | −6,000−3.5% | Reduced | Holders |
| Q2 2025 | 171,943 | $3.95M | 0.1% | +25,916+17.7% | Added | Holders |
| Q1 2025 | 146,027 | $3.29M | 0.1% | −230,708−61.2% | Reduced | Holders |
| Q4 2024 | 376,735 | $8.59M | 0.3% | −799,987−68.0% | Reduced | Holders |
| Q3 2024 | 1,176,722 | $27.8M | 1.2% | +890,048+310.5% | Added | Holders |
| Q2 2024 | 286,674 | $811.3K | <0.1% | +286,674 | New | Holders |
| Q1 2022 | 0 | $0 | 0.0% | −50,000−100.0% | Sold out | Holders |
| Q4 2021 | 50,000 | $318.0K | <0.1% | −135,000−73.0% | Reduced | Holders |
| Q3 2021 | 185,000 | $1.13M | <0.1% | 00.0% | Unchanged | Holders |
| Q2 2021 | 185,000 | $1.21M | <0.1% | +185,000 | New | Holders |