Managers / Q4 2018 · view latest →
One William Street Capital Management, L.P.
CIK 0001534300 · 299 PARK AVENUE, 25TH FLOOR, NEW YORK, NY, 10171 · 212-957-2500
Summary
One William Street Capital Management, L.P. reported $34M in U.S.-listed holdings across 5 positions for Q4 2018.
The portfolio is heavily concentrated: Ishares Tr alone accounts for 70.7% of reported value.
Portfolio Metrics
Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.
Reported Value by Quarter
Portfolio Composition
- ETP · 70.7% · $24M
- Common Stock · 13.4% · $5M
- REIT · 10.6% · $4M
- Other · 5.3% · $2M
Quarter-over-Quarter Changes full breakdown →
| Issuer | Move | Share Δ | Shares now | Value Δ | Value now |
|---|---|---|---|---|---|
| ISHARES TR | NEW | +300.0K | 300.0K | +$24M | $24M |
| NAVINAVIENT CORPORATION | NEW | +521.8K | 521.8K | +$5M | $5M |
| CLPRCLIPPER RLTY INC | NEW | +205.0K | 205.0K | +$3M | $3M |
| CHIMERA INVT CORP | NEW | +103.1K | 103.1K | +$2M | $2M |
| BXMTBLACKSTONE MTG TR INC | NEW | +30.7K | 30.7K | +$978,000 | $978,000 |
Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.
Holdings — Q4 2018
| # | Issuer | Class | % Portfolio | Value ↓ | Shares |
|---|---|---|---|---|---|
| 1 | ISHARES TR | IBOXX HI YD ETF | 70.68% | $24M | 300.0K |
| 2 | NAVINAVIENT CORPORATIONhistory → | COM | 13.36% | $5M | 521.8K |
| 3 | CLPRCLIPPER RLTY INChistory → | COM | 7.78% | $3M | 205.0K |
| 4 | CHIMERA INVT CORP | COM NEW | 5.34% | $2M | 103.1K |
| 5 | BXMTBLACKSTONE MTG TR INChistory → | COM CL A | 2.84% | $978,000 | 30.7K |
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $1.2B | 16 | May 14, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $745M | 8 | Feb 17, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2025 | $288M | 7 | Nov 13, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $54M | 7 | Aug 13, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $33M | 6 | May 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $213M | 8 | Feb 13, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $284M | 5 | Nov 12, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q2 2024 | $146M | 3 | Aug 12, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q1 2024 | $66M | 6 | May 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q4 2023 | $702M | 12 | Feb 12, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q3 2023 | $41M | 5 | Nov 13, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q2 2023 | $26M | 7 | Aug 11, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q1 2023 | $433M | 5 | May 3, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q4 2022 | $105M | 7 | Feb 22, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q3 2020 | $4M | 1 | Nov 16, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q2 2020 | $4M | 1 | Aug 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q1 2020 | $4M | 1 | May 8, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q4 2019 | $6M | 1 | Feb 12, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q3 2019 | $5M | 1 | Nov 12, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q2 2019 | $6M | 1 | Aug 1, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q1 2019 | $144M | 2 | May 3, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q4 2018 | $34M | 5 | Feb 13, 2019 | 13F-HR | changes · EDGAR ↗ |
13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.