Firm profile

One William Street Capital Management, LP.

NEW YORK, NYCRD 150522Registration Status: ApprovedEffective since June 22, 2009SEC # 801-70264Latest ADV March 31, 2026

One William Street Capital Management, LP. is an SEC registered investment adviser organized as a limited partnership with a primary office location in New York, NY. Its latest Form ADV filing, dated March 31, 2026, reports $11.3B in regulatory assets under management, 124 employees, 1 office, and 22 accounts.

Assets Under Management
$11.3B
Employees
124
Offices
1 office
Total Clients
21

Associated firm names

1 name listed
  • ONE WILLIAM STREET CAPITAL MANAGEMENT, LP.

Leadership

5 roles identified
CEODavid N. Sherr
CCOArthur C. Damoulakis
CFOCrystal K. Frumberg

Advisory services offered

2 types reported
Portfolio management for businesses
Portfolio management for pooled investment vehicles

Fee models offered

2 types reported
Asset based fees
Performance-based fees

Offices & Contact

Primary office

NEW YORK, New York, United States

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Primary office regionOther reported regions

Shading shows states and countries with reported offices. Cities are listed below; shading does not indicate service coverage.

New York

NEW YORKPrimary office

1 office records listed · 1 total offices reported. Counts can use different reporting dates. SEC filers may list only their largest 25 additional offices.

Contact and digital presence

ADV profile links

Regulatory Assets Under Management Breakdown

Total regulatory assets under management$11.3Bas of March 31, 2026
Discretionary100.0%
$11.3B
100% of total RAUM100.0%
Non-discretionary0.0%
$0
0% of total RAUM0.0%
All regulatory assets under management are discretionary.

Client Coverage Demographics

Top client segmentPooled Investment Vehicles represent 100.0% of total clients.
Top client categories% of clientsClients
1
Pooled Investment Vehicles
100.0%
21
Categories with <5 clients
Pension and profit sharing plans<5 clients

Assets under management Growth by Quarter

Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.

Total AUM$11.3B
Total Accounts22
10Y AUM Change+$7.0B (+163.4%)

Private Funds

Private funds reported by One William Street Capital Management, LP.

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Employee Growth by Quarter

Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.

Total Employees124
Clients per Employee0:1
10Y Employee Change+64 (+106.7%)

Historical AUM and employee figures reflect available SEC Form ADV filings under this CRD. Filing gaps may reflect registration status changes, dormant periods, state registration periods, firm restructuring, or other reporting changes. Rialytix does not interpolate missing periods.


Ownership

Reported direct and indirect ownership ranges

Each range applies to a separate reported relationship and should not be added together.

Reported ownership ranges

Highlighted bands show the percentage range reported in Form ADV.

0%25%50%75%100%
DAVID NEAL SHERRDirect owner · Schedule AInterest in ONE WILLIAM STREET CAPITAL MANAGEMENT, LP.
50% to < 75%
MATTHEW JED ZIFFERDirect owner · Schedule AInterest in ONE WILLIAM STREET CAPITAL MANAGEMENT, LP.
5% to < 10%
SHERR FAMILY INVESTMENTS, LLCDirect owner · Schedule AInterest in ONE WILLIAM STREET CAPITAL MANAGEMENT, LP.
5% to < 10%
JOSHUA DAVID SIMONSDirect owner · Schedule AInterest in ONE WILLIAM STREET CAPITAL MANAGEMENT, LP.
5% to < 10%
KURT ANTHONY LOCHERDirect owner · Schedule AInterest in ONE WILLIAM STREET CAPITAL MANAGEMENT, LP.
< 5%
FRANK CARMEN PREZIOSODirect owner · Schedule AInterest in ONE WILLIAM STREET CAPITAL MANAGEMENT, LP.
< 5%
ONE WILLIAM STREET CAPITAL HOLDINGS, LLCDirect owner · Schedule AInterest in ONE WILLIAM STREET CAPITAL MANAGEMENT, LP.
< 5%
DAVID NEAL SHERRIndirect owner · Schedule BInterest in ONE WILLIAM STREET CAPITAL HOLDINGS, LLC
75%+
DAVID N. SHERR 2012 DESCENDANTS' TRUSTIndirect owner · Schedule BInterest in SHERR FAMILY INVESTMENTS, LLC
50% to < 75%
SHERR FAMILY INVESTMENTS IV LLCIndirect owner · Schedule BInterest in HOLLY A. SHERR 2012 DESCENDANTS' TRUST
50% to < 75%
HOLLY A. SHERR 2012 DESCENDANTS' TRUSTIndirect owner · Schedule BInterest in SHERR FAMILY INVESTMENTS, LLC
25% to < 50%

Bars represent the reported range at that individual ownership step, not an estimated percentage of the advisory firm. Indirect relationships may refer to intermediate entities rather than directly to One William Street Capital Management, LP..

Reported ownership and control details

Form ADV · Filing date 2026-03-31 · Schedules A and B

21 entries
#Owner / person & roleInterest in entityReported interestControl personTitle / status acquiredSource
1DAVID NEAL SHERRLIMITED PARTNER/CHIEF EXECUTIVE OFFICER/CHIEF INVESTMENT OFFICERIndividualONE WILLIAM STREET CAPITAL MANAGEMENT, LP.50% to less than 75%Code DYesLIMITED PARTNER/CHIEF EXECUTIVE OFFICER/CHIEF INVESTMENT OFFICER04/2008Schedule APDF page 76
2KURT ANTHONY LOCHERLIMITED PARTNER/CO-PRESIDENTIndividualONE WILLIAM STREET CAPITAL MANAGEMENT, LP.Less than 5%Code NAYesLIMITED PARTNER/CO-PRESIDENT04/2008Schedule APDF page 76
3FRANK CARMEN PREZIOSOLIMITED PARTNER/DEPUTY CHIEF INVESTMENT OFFICERIndividualONE WILLIAM STREET CAPITAL MANAGEMENT, LP.Less than 5%Code NAYesLIMITED PARTNER/DEPUTY CHIEF INVESTMENT OFFICER04/2008Schedule APDF page 76
4MATTHEW JED ZIFFERLIMITED PARTNER/EXECUTIVE OFFICERIndividualONE WILLIAM STREET CAPITAL MANAGEMENT, LP.5% to less than 10%Code AYesLIMITED PARTNER/EXECUTIVE OFFICER04/2008Schedule APDF page 76
5CHRISTOPHER ROBINSON EPESCHIEF LEGAL OFFICERIndividualONE WILLIAM STREET CAPITAL MANAGEMENT, LP.Less than 5%Code NAYesCHIEF LEGAL OFFICER05/2008Schedule APDF page 76
6ONE WILLIAM STREET CAPITAL HOLDINGS, LLCGENERAL PARTNERDomestic entityONE WILLIAM STREET CAPITAL MANAGEMENT, LP.Less than 5%Code NAYesGENERAL PARTNER04/2008Schedule APDF page 76
7SHERR FAMILY INVESTMENTS, LLCLIMITED PARTNERDomestic entityONE WILLIAM STREET CAPITAL MANAGEMENT, LP.5% to less than 10%Code ANoLIMITED PARTNER12/2012Schedule APDF page 76
8JOSHUA DAVID SIMONSLIMITED PARTNER/CO- PRESIDENT/EXECUTIVE OFFICERIndividualONE WILLIAM STREET CAPITAL MANAGEMENT, LP.5% to less than 10%Code AYesLIMITED PARTNER/CO- PRESIDENT/EXECUTIVE OFFICER01/2015Schedule APDF page 76
9ARTHUR CONSTANTINE DAMOULAKISCHIEF COMPLIANCE OFFICERIndividualONE WILLIAM STREET CAPITAL MANAGEMENT, LP.Less than 5%Code NAYesCHIEF COMPLIANCE OFFICER08/2025Schedule APDF page 76
10CRYSTAL KELYN FRUMBERGCHIEF FINANCIAL OFFICERIndividualONE WILLIAM STREET CAPITAL MANAGEMENT, LP.Less than 5%Code NAYesCHIEF FINANCIAL OFFICER11/2025Schedule APDF page 76
11DAVID NEAL SHERRMANAGING MEMBER/OWNERIndividualONE WILLIAM STREET CAPITAL HOLDINGS, LLC75% or moreCode EYesMANAGING MEMBER/OWNER04/2008Schedule BPDF page 76
12DAVID N. SHERR 2012 DESCENDANTS' TRUSTMEMBERDomestic entitySHERR FAMILY INVESTMENTS, LLC50% to less than 75%Code DYesMEMBER12/2012Schedule BPDF page 76
13HOLLY ANN SHERRCO-TRUSTEEIndividualDAVID N. SHERR 2012 DESCENDANTS' TRUSTPercentage not specifiedCode FYesCO-TRUSTEE12/2012Schedule BPDF page 76
14KURT ANTHONY LOCHERCO-TRUSTEEIndividualDAVID N. SHERR 2012 DESCENDANTS' TRUSTPercentage not specifiedCode FYesCO-TRUSTEE12/2012Schedule BPDF page 77
15HOLLY A. SHERR 2012 DESCENDANTS' TRUSTMEMBERDomestic entitySHERR FAMILY INVESTMENTS, LLC25% to less than 50%Code CYesMEMBER12/2012Schedule BPDF page 77
16DAVID NEAL SHERRCO-TRUSTEEIndividualHOLLY A. SHERR 2012 DESCENDANTS' TRUSTPercentage not specifiedCode FYesCO-TRUSTEE12/2012Schedule BPDF page 77
17KURT ANTHONY LOCHERCO-TRUSTEEIndividualHOLLY A. SHERR 2012 DESCENDANTS' TRUSTPercentage not specifiedCode FYesCO-TRUSTEE12/2012Schedule BPDF page 77
18SHERR FAMILY INVESTMENTS IV LLCMEMBERDomestic entityHOLLY A. SHERR 2012 DESCENDANTS' TRUST50% to less than 75%Code DYesMEMBER11/2021Schedule BPDF page 77
19KURT ANTHONY LOCHERMANAGERIndividualSHERR FAMILY INVESTMENTS IV LLCPercentage not specifiedCode FYesMANAGER11/2021Schedule BPDF page 77
20COMMONWEALTH TRUST COMPANYCO-TRUSTEEDomestic entityDAVID N. SHERR 2012 DESCENDANTS' TRUSTPercentage not specifiedCode FYesCO-TRUSTEE12/2012Schedule BPDF page 77
21COMMONWEALTH TRUST COMPANYCO-TRUSTEEDomestic entityHOLLY A. SHERR 2012 DESCENDANTS' TRUSTPercentage not specifiedCode FYesCO-TRUSTEE12/2012Schedule BPDF page 77

Less than 5% may include zero. Code F identifies a role without specifying a percentage. Reported interests may overlap and may not include every owner. Total indirect ownership is not calculated.

Compliance & Disclosures

Filing dated 3/31/2026 12:21:35 PM

Responses were selected by the RIA in its filing. Questions are shortened for readability; “you” refers to the reporting firm, and some questions also cover advisory affiliates.

RIA or supervised-person involvementThe RIA reported that none of the events below involve the firm or its supervised persons.RIA responseNo
AFelonies2 No

In the past ten years, have you or any advisory affiliate:

  • A1Been convicted of or pleaded guilty or no contest to a felony?No
  • A2Been charged with a felony?No
BMisdemeanors2 No

In the past ten years, have you or any advisory affiliate:

  • B1Been convicted of or pleaded guilty or no contest to a misdemeanor involving investments, an investment-related business, fraud, false statements or omissions, wrongful taking of property, bribery, perjury, forgery, counterfeiting, or extortion?No
  • B2Been charged with a misdemeanor of the kind listed above?No
CSEC or CFTC actions5 No

Has the SEC or CFTC ever:

  • C1Found you or an advisory affiliate made a false statement or omission?No
  • C2Found you or an advisory affiliate violated SEC or CFTC regulations or statutes?No
  • C3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • C4Entered an order against you or an advisory affiliate in connection with investment-related activity?No
  • C5Imposed a civil money penalty on you or an advisory affiliate, or ordered you or an advisory affiliate to cease and desist from any activity?No
DOther regulatory actions5 No

Has any other federal regulatory agency, state regulatory agency, or foreign financial regulatory authority ever:

  • D1Found you or an advisory affiliate made a false statement or omission, or was dishonest, unfair, or unethical?No
  • D2Found you or an advisory affiliate violated investment-related regulations or statutes?No
  • D3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • D4In the past ten years, entered an order against you or an advisory affiliate in connection with investment-related activity?No
  • D5Denied, suspended, or revoked your or an advisory affiliate’s registration or license, or otherwise prevented association with an investment-related business or restricted activities?No
ESelf-regulatory organization actions4 No

Has a self-regulatory organization or commodities exchange ever:

  • E1Found you or an advisory affiliate made a false statement or omission?No
  • E2Found you or an advisory affiliate violated its rules, other than a violation designated as a minor rule violation under an SEC-approved plan?No
  • E3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • E4Disciplined you or an advisory affiliate by expulsion, suspension, barring association with other members, or otherwise restricting activities?No
FProfessional authorizations1 No
  • FHas an authorization to act as an attorney, accountant, or federal contractor granted to you or an advisory affiliate ever been revoked or suspended?No
GPending regulatory proceedings1 No
  • GAre you or any advisory affiliate now the subject of a regulatory proceeding that could result in a “Yes” answer to any part of C, D, or E?No
HCivil judicial actions and proceedings4 No

(1) Court actions

Has a domestic or foreign court:

  • H(1)(a)In the past ten years, enjoined you or an advisory affiliate in connection with investment-related activity?No
  • H(1)(b)Found that you or an advisory affiliate violated investment-related statutes or regulations?No
  • H(1)(c)Dismissed, pursuant to a settlement agreement, an investment-related civil action brought against you or an advisory affiliate by a state or foreign financial regulatory authority?No

(2) Pending civil proceedings

  • H(2)Are you or any advisory affiliate now the subject of a civil proceeding that could result in a “Yes” answer to any part of H(1)?No

* Metrics are based on the latest available data, including Form ADV filings, brochures, and relationship summaries pulled from the SEC IAPD, and may be subject to change. Learn what is included in the Rialytix data. Please refer to the firm's official disclosures for the most accurate information using their CRD number. This is not investment advice.