One William Street Capital Master Fund, Ltd.
Hedge FundFund ID 805-9360747329Cayman Islands
Gross assets
$6.19B
Min. investment
$250K
Beneficial owners
303
Size rank
Top 1%
Audited
Yes
Structure
Master
About this fund
One William Street Capital Master Fund, Ltd. is a hedge fund managed by One William Street Capital Management, LP.. The fund reports $6.2 billion in gross assets, placing it among the top 1% of private funds by size. The stated minimum investment is $250,000. Its financial statements are audited annually. Private funds are not required to publicly disclose returns; Form ADV reports assets, structure, and service providers, shown above.
Fund details
| Fund ID | 805-9360747329 |
| Fund type | Hedge Fund |
| 3(c)(1) exclusion | No |
| 3(c)(7) exclusion | Yes |
| Master fund | Yes |
| Feeder fund | No |
| Fund of funds | No |
| Relies on exemption from registration | Yes |
| Annual audit | Yes |
| Prepared per GAAP | Yes |
| Sub-advised | No |
| % of assets independently valued | 0% |
Other funds from this manager
| Fund | Type | Gross assets |
|---|---|---|
| Ows Credit Opportunity Master Fund, Ltd. | Hedge | $2B |
| Ows Lsar Master Fund, L.P. | Hedge | $1.05B |
| Ows ABS Master Fund II, LP | Hedge | $865.5M |
See all 7 funds from this manager — unlock the full record.
Join to unlock · $37/moFrequently asked questions
How large is One William Street Capital Master Fund, Ltd.?
One William Street Capital Master Fund, Ltd. reports $6.2 billion in gross assets, among the top 1% of private funds by size.
What is the minimum investment for One William Street Capital Master Fund, Ltd.?
The stated minimum investment is $250,000.
Who manages One William Street Capital Master Fund, Ltd.?
One William Street Capital Master Fund, Ltd. is managed by One William Street Capital Management, LP.
Does One William Street Capital Master Fund, Ltd. disclose returns?
No. Private funds are not required to publicly disclose performance. Form ADV reports assets, structure, and service providers.
Manager
O
New York, NY
Service providers
Prime broker
Custodian
Administrator
Auditor
Marketer
Reported gross assets
$6.19B▲ 31%
Mar '25Form ADV, monthlyJun '26
How this fund compares
Gross assetsTop 1%
Larger than 99% of 67,041 private funds
Gross assets vs Hedge FundsTop 3%
Larger than 97% of 12,442 hedge funds
Minimum investmentTop 56%
Higher than 44% of funds reporting a minimum
Investor base
Adviser & related persons9%
Funds of funds14%
Non-U.S. persons43%
Share of the fund's beneficial ownership reported on Form ADV. Categories can overlap.