One William Street Capital Management, L.P.
In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 17, 2026), One William Street Capital Management, L.P. reported 6 stock positions worth $42.7 million. Its top holding was Invesco S&P 500 Equal Weight (RSP) at 67.3% of the portfolio, followed by Flagstar Bank NA (FLG, 11.8%) and TPG Re Finance Trust (TRTX, 9.6%). Compared with Q3 2025, it opened 3 new positions, sold out of 3 and added to 2. The biggest buy was a new position in Invesco S&P 500 Equal Weight (RSP) and the biggest sale an exit from Vanguard Int-Term Corporate (VCIT).
- Most Recent 13F
- Q2 2026
- Location
- New York, NY
- CIK
- 0001534300
- Portfolio Value
- $42.7M (Q4 2025)
- SEC Filing
- 0001172661-26-000841 ↗ filed Feb 17, 2026
Holdings Value
Holdings 6 stocks · $42.7M
| RSP Invesco S&P 500 Equal Weight | 67.29% | 150,000 | $28.7M | New |
| FLG Flagstar Bank NA | 11.79% | 400,000 | $5.0M | Add +95.1% |
| TRTX TPG Re Finance Trust Inc. | 9.62% | 476,961 | $4.1M | Add +13.4% |
| HYG Ishr Ibx Usd Hiyld CB ETF-Ui | 9.44% | 50,000 | $4.0M | New |
| GSBD Goldman Sachs BDC Inc. | 1.74% | 80,000 | $742K | New |
| NFE New Fortress Energy Inc. | 0.11% | 42,564 | $49K | No change |
Options reported separately and not counted above: HYG puts ($695.4M), IWM puts ($7.4M).
Portfolio Sells Q3 2025 → Q4 2025
Portfolio Buys Q3 2025 → Q4 2025
Options Activity Q3 2025 → Q4 2025
| HYG Ishr Ibx Usd Hiyld CB ETF-Ui | put | Add +157.4% | 8,624,000 | $695.4M |
| IWM iShares Russell 2000 ETF | put | New | 30,000 | $7.4M |
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 12 | $42.3M | BKLN, TRTX, VCIT, FLG, ARI |
| Q1 2026 | 11 | $52.0M | BKLN, TRTX, VCIT, FLG, SPY |
| Q4 2025 | 6 | $42.7M | RSP, FLG, TRTX, HYG, GSBD |
| Q3 2025 | 6 | $15.6M | VCIT, TRTX, HOUS, FLG, ADAM |
| Q2 2025 | 4 | $32.7M | HYG, BKLN, HOUS, NFE |
| Q1 2025 | 2 | $1.9M | HOUS, NFE |
| Q4 2024 | 2 | $9.7M | BKLN, NFE |
| Q3 2024 | 1 | $455K | NFE |
| Q2 2024 | 0 | $0 | |
| Q1 2024 | 3 | $66.3M | HYG, LQD, HOUS |