One William Street Capital Management LP

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Assets, Funds, Holdings

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One William Street Capital Management LP
CRD #150522
SEC #801-70264
CIK #
AUM $10.8 B (2025-03-28)
Employees 110 (48% Investors, 5% Brokers)
Phone212-957-2500
Address299 Park Avenue
New York, NY 10171
Source [IAPD] [Website] [LinkedIn]
Total AUM ($B)
151296302007201320192026
Type Form D Funds Date Sold ($M) AUM ($M)
HF OIS Series 2 LLC 2025-03-28 169.8
HF OWS ABS Fund VIII Ltd [2023-04-06] 5.9 313.8
HF OWS Commercial Funding IV LLC 2022-03-31 72.9
HF OWS Credit Opportunity Investment Fund LLC 2022-03-31 172.3
HF OWS ABS Fund V Ltd [2020-06-11] 53.2 66.2
HF OWS ABS IV LP [2018-02-23] 325.2 718.8
HF OWS Global Fixed Income Fund Usd-Hedged Ltd 2017-05-24 130.0
HF OWS ABS Fund III Ltd [2016-11-08] 58.2 4.1
HF OWS Mortgage Opportunity Master Fund II LP [2015-03-19] 50.6 10.1
HF OWS ABS Master Fund II LP 2014-02-20 748.9
View All
AUM Breakdown Accounts AUM ($B)
By Client Type
(a) Individuals (other than high net worth individuals) 0 0.0
(b) Individuals (high net worth individuals) 0 0.0
(c) Banking or thrift institutions 0 0.0
(d) Investment companies 0 0.0
(e) Business development companies 0 0.0
(f) Pooled investment vehicles 22 10.2
(g) Pension and profit sharing plans 0 0.6
(h) Charitable organizations 0 0.0
(i) State or municipal government entities 0 0.0
(j) Other investment advisers 0 0.0
(k) Insurance companies 0 0.0
(l) Sovereign wealth funds and foreign official institutions 0 0.0
(m) Corporations or other businesses not listed above 0 0.0
(n) Other 0 0.0
Total 23 10.8
By Discretionary
Discretionary 23 10.8
Non-Discretionary 0 0.0
Total 23 10.8
By Non-United States Persons
Non-United States Persons 6.9
United States Persons 3.9
Total 23 10.8
Form D Directors # Filings # Firms 2011 - 2025
Ronan Guilfoyle 355
David Bree 428
Alaina Danley 108
John Dagostino 111
Jason Fitzgerald 86
Don Ebanks 95
Vanessa Gilman 36
One William Street Capital Management LP 25
David Sherr 18
Kurt Locher 12
OWS Capital Partners GP IV LLC 2
Srinivas Modukuri 2
One William Street Capital Partners GP LLC 3
One William Street Capital Management 2
Matthew Ziffer 1
c/o OWS Capital Partners GP IV LLC 1
OWS Mortgage Opportunity GP LLC 1
OWS Capital Partners GP VIII LLC 1
Frank Prezioso 1
Khalil Kanaan 1
Comparable Firms State AUM ($B)
ValueAct Capital Management LP
CA 11.4
Wolverine Asset Management LLC
IL 11.2
Bluecove Limited
11.1
Twinbeech Capital LP
NY 11.1
Fermat Capital Management LLC
CT 11.1
Whitebox Advisors LLC
MN 11.0
Redwood Capital Management LLC
NY 10.8
Weiss Asset Management LP
MA 10.7
Allspring Global Investments UK Limited
10.2
JOHCM USA Inc
MA 10.2
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