OW
One William Street Capital Management, L.P.
Concentrated strategySector-focusedMomentum follower
Total reported value
$1.2B
Reporting period: 2026-03-31 · Number of holdings: 16
One William Street Capital Management, L.P. disclosed 16 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $1.2B and a quarterly turnover rate of 51.2%.
Personality snowflake
- Concentration
- 100
- Portfolio Stability
- 51.2
- Momentum/Contrarian
- 100
- Sector conviction
- 100
- Diversification
- 26
- Sizing Uniformity
- 67.87
Recent moves
Trim HYG
+53.5% $360.0M
Trim FLG
0.0% $232.0K
Add TRTX
+124.3% $4.3M
Trim IWM
+41.7% $3.2M
Trim NFE
0.0% -$23.4K
New buy BKLN
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
Showing top 13 holdings (of 16 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | HYG | Ishr Ibx Usd Hiyld Cb Etf-ui | ETF-High Yield | 89.85% | -3.97% | +53.52% | |
| 2 | BKLN | Invesco Senior Loan ETF | ETF-Other | 4.72% | +4.72% | NEW | |
| 3 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 1.79% | +1.79% | NEW | |
| 4 | IWM | Ishares Russell 2000 ETF | ETF-Small Cap | 0.89% | -0.10% | +41.67% | |
| 5 | TRTX | Tpg Re Finance Trust INC | Stock-Other | 0.71% | +0.16% | +124.34% | |
| 6 | VCIT | Vanguard Int-term Corporate | ETF-Corp Bonds | 0.50% | +0.50% | NEW | |
| 7 | FLG | Flagstar Bank NA | Stock-Financials | 0.45% | -0.23% | — | |
| 8 | CUZ | Cousins Properties INC | Stock-Real Estate | 0.38% | +0.38% | NEW | |
| 9 | RKT | Rocket Cos Inc-class A | Stock-Financials | 0.19% | +0.19% | NEW | |
| 10 | ARI | Apollo Commercial Real Estat | Stock-Other | 0.18% | +0.18% | NEW | |
| 11 | STWD | Starwood Property Trust INC | Stock-Real Estate | 0.17% | +0.17% | NEW | |
| 12 | BXMT | Blackstone Mortgage Tru-cl A | Stock-Real Estate | 0.16% | +0.16% | NEW | |
| 13 | NFE | New Fortress Energy INC | Stock-Other | — | -0.01% | — |
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 16 | $1.2B | 51 | |
| 2025-12-31 | 8 | $745.4M | 92 | |
| 2025-09-30 | 7 | $287.6M | 100 | |
| 2025-06-30 | 7 | $54.3M | 0 | |
| 2025-03-31 | 6 | $33.5M | 100 | |
| 2024-12-31 | 8 | $213.3M | 0 | |
| 2024-09-30 | 5 | $284.5M | 0 | |
| 2024-06-30 | 3 | $145.7M | 0 | |
| 2024-03-31 | 6 | $66.3M | 0 | |
| 2023-12-31 | 12 | $701.6M | 0 | |
| 2023-09-30 | 5 | $40.7M | 0 | |
| 2023-06-30 | 7 | $25.8M | 0 | |
| 2023-03-31 | 5 | $433.4M | 0 | |
| 2022-12-31 | 7 | $104.8M | 0 | |
| 2020-09-30 | 1 | $4.3M | 18 | |
| 2020-06-30 | 1 | $3.6M | 8 | |
| 2020-03-31 | 1 | $3.9M | 37 | |
| 2019-12-31 | 1 | $5.7M | 7 | |
| 2019-09-30 | 1 | $5.3M | 6 | |
| 2019-06-30 | 1 | $5.7M | 100 | |
| 2019-03-31 | 2 | $144.4M | 100 | |
| 2018-12-31 | 5 | $34.4M | 0 |
Holding changes this quarter
One William Street Capital Management, L.P.'s most significant position changes for 2026-03-31: New buy: Invesco Senior Loan ETF (BKLN); Sold out: Invesco S&p 500 Equal Weight (RSP); New buy: Ss Spdr S&p 500 ETF Trust-us (SPY); New buy: Vanguard Int-term Corporate (VCIT); New buy: Cousins Properties INC (CUZ).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | TRTX | Tpg Re Finance Trust INC | +0.2% | +124.34% | Add |
| 2 | NFE | New Fortress Energy INC | 0% | — | Unchanged |
| 3 | IWM | Ishares Russell 2000 ETF | -0.1% | +41.67% | Add |
| 4 | FLG | Flagstar Bank NA | -0.2% | — | Unchanged |
| 5 | HYG | Ishr Ibx Usd Hiyld Cb Etf-ui | -4% | +53.52% | Add |
| 6 | BKLN | Invesco Senior Loan ETF | — | NEW | New buy |
| 7 | RSP | Invesco S&p 500 Equal Weight | — | EXIT | Sold out |
| 8 | SPY | Ss Spdr S&p 500 ETF Trust-us | — | NEW | New buy |
| 9 | VCIT | Vanguard Int-term Corporate | — | NEW | New buy |
| 10 | CUZ | Cousins Properties INC | — | NEW | New buy |
| 11 | RKT | Rocket Cos Inc-class A | — | NEW | New buy |
| 12 | ARI | Apollo Commercial Real Estat | — | NEW | New buy |
| 13 | STWD | Starwood Property Trust INC | — | NEW | New buy |
| 14 | BXMT | Blackstone Mortgage Tru-cl A | — | NEW | New buy |
| 15 | GSBD | Goldman Sachs Bdc INC | — | EXIT | Sold out |
FAQ
What is One William Street Capital Management, L.P. and what type of investor is it?
One William Street Capital Management, L.P. is a investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-03-31), the firm manages a tracked equity portfolio valued at approximately $1.2B, spread across 16 disclosed positions.
What are One William Street Capital Management, L.P.'s largest equity positions?
Based on the latest 13F filing, One William Street Capital Management, L.P.'s top holdings by market value are:
1. Ishr Ibx Usd Hiyld Cb Etf-ui (HYG) — $1.1B (89.8%)
2. Invesco Senior Loan ETF (BKLN) — $55.6M (4.7%)
3. Ss Spdr S&p 500 ETF Trust-us (SPY) — $21.1M (1.8%)
4. Ishares Russell 2000 ETF (IWM) — $10.5M (0.9%)
5. Tpg Re Finance Trust INC (TRTX) — $8.4M (0.7%)
What changes did One William Street Capital Management, L.P. make in its most recent portfolio filing?
In the latest reported quarter, One William Street Capital Management, L.P. made 13 notable position adjustments: 8 new positions were initiated, 3 existing holdings were added to, 0 positions were partially reduced, and 2 were completely exited. The largest of these moves: New buy: Invesco Senior Loan ETF (BKLN); Sold out: Invesco S&p 500 Equal Weight (RSP); New buy: Ss Spdr S&p 500 ETF Trust-us (SPY); New buy: Vanguard Int-term Corporate (VCIT); New buy: Cousins Properties INC (CUZ)
What sectors does One William Street Capital Management, L.P. focus on?
One William Street Capital Management, L.P. is concentrated in the following sectors based on its current disclosed equity portfolio:
• Real Estate: 52.8%
• Financials: 47.2%