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One William Street Capital Management, L.P.

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13F filer, CIK 1534300, New York, NY

One William Street Capital Management, L.P. reported $54,313,750 across 5 holdings for the quarter ended 2025-06-30, in a 13F-HR filed 2025-08-13.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001172661-25-003119

Period
2025-06-30
Reported value
$54.3M
Holdings
5
Top 10 weight
100%
New
3
Sold out
1

Largest buys vs the previous quarter

SecurityShares changeApprox. value
HYGnew+250,000$20.2M
BKLNnew+500,000$10.5M
HOUSadded+75,000$272K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

None.

Holdings, Q2 2025

Share positions as resolved from 13F-HR 0001172661-25-003119, largest first. % of portfolio is the value over $32,689,000, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
HYGISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 250,000 shares 250,000$20.2M61.68%newTimeline
BKLNINVESCO EXCH TRADED FD TR IIQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 425,000 shares; 2025Q1: not reported; 2025Q2: 500,000 shares 500,000$10.5M32%newTimeline
HOUSANYWHERE REAL ESTATE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 450,000 shares; 2025Q2: 525,000 shares 525,000$1.9M5.81%+75,000Timeline
NFENEW FORTRESS ENERGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 50,000 shares; 2024Q4: 50,000 shares; 2025Q1: 50,000 shares; 2025Q2: 50,000 shares 50,000$166K0.51%0Timeline

Options

Puts and calls, as filed. The amount and value describe the underlying shares, not the option premium, so they stay out of % of portfolio (H5).

SecurityTypeAmountValueChange
SPYSTATE STR SPDR S&P 500 ETF T SHSput35,000$21.6Mnew

Sold out in Q2 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
HYGISHARES TR400,000$31.6Mput

How Q2 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001172661-25-003119 base2025-08-13acceptance time not in the bulk data set