Firm profile

Westchester Capital Management, LLC

VALHALLA, NYCRD 155686Registration Status: ApprovedEffective since December 17, 2010SEC # 801-72002Latest ADV March 30, 2026

Westchester Capital Management, LLC is an SEC registered investment adviser organized as a limited liability company with a primary office location in Valhalla, NY. Its latest Form ADV filing, dated March 30, 2026, reports $2.9B in regulatory assets under management, 10 employees, 1 office, and 7 accounts.

Assets Under Management
$2.9B
Employees
10
Offices
1 office
Total Clients
7

Associated firm names

3 names listed
  • WESTCHESTER CAPITAL ADVISORS, LLC
  • WESTCHESTER CAPITAL MANAGEMENT, LLC
  • WESTCHESTER CAPITAL FUNDS

Leadership

4 roles identified
CEOGeorge R. Aylward
CCOCasaundra L. Wu
CIOMichael T. Shannon

Advisory services offered

1 types reported
Portfolio management for investment companies

Fee models offered

1 types reported
Asset based fees

Offices & Contact

Primary office

VALHALLA, New York, United States

Loading map…

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

VALHALLAPrimary 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$2.9Bas of March 30, 2026
Discretionary100.0%
$2.9B
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 segmentInvestment Cos. represent 100.0% of total clients.
Top client categories% of clientsClients
1
Investment Cos.
100.0%
7

Assets under management Growth by Quarter

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

Total AUM$2.9B
Total Accounts7
10Y AUM Change$-892M (-23.6%)

Private Funds

Private funds reported by Westchester Capital Management, LLC

Loading private fund disclosures…

Employee Growth by Quarter

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

Total Employees10
Clients per Employee1:1
10Y Employee Change-6 (-37.5%)

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%
VIRTUS PARTNERS, INC.Direct owner · Schedule AInterest in WESTCHESTER CAPITAL MANAGEMENT, LLC
75%+
VIRTUS INVESTMENT PARTNERS, INC.Indirect owner · Schedule BInterest in VIRTUS PARTNERS, INC.
75%+

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 Westchester Capital Management, LLC.

Reported ownership and control details

Form ADV · Filing date 2026-03-30 · Schedules A and B

10 entries
#Owner / person & roleInterest in entityReported interestControl personTitle / status acquiredSource
1ROY DOUGLAS BEHRENCO-PRESIDENT AND CO-CHIEF INVESTMENT OFFICERIndividualWESTCHESTER CAPITAL MANAGEMENT, LLCLess than 5%Code NAYesCO-PRESIDENT AND CO-CHIEF INVESTMENT OFFICER10/2021Schedule APDF page 42
2MICHAEL THOMAS SHANNONCO-PRESIDENT AND CO-CHIEF INVESTMENT OFFICERIndividualWESTCHESTER CAPITAL MANAGEMENT, LLCLess than 5%Code NAYesCO-PRESIDENT AND CO-CHIEF INVESTMENT OFFICER10/2021Schedule APDF page 42
3CASAUNDRA LEE WUASSISTANT MANAGING DIRECTOR AND CHIEF COMPLIANCE OFFICERIndividualWESTCHESTER CAPITAL MANAGEMENT, LLCLess than 5%Code NAYesASSISTANT MANAGING DIRECTOR AND CHIEF COMPLIANCE OFFICER10/2021Schedule APDF page 42
4CHRISTOPHER J COLOMBCHIEF OPERATIONS OFFICERIndividualWESTCHESTER CAPITAL MANAGEMENT, LLCLess than 5%Code NAYesCHIEF OPERATIONS OFFICER10/2021Schedule APDF page 42
5GEORGE ROBERT AYLWARDCHIEF EXECUTIVE OFFICERIndividualWESTCHESTER CAPITAL MANAGEMENT, LLCLess than 5%Code NAYesCHIEF EXECUTIVE OFFICER10/2021Schedule APDF page 42
6MICHAEL AARON ANGERTHALEXECUTIVE VICE PRESIDENTIndividualWESTCHESTER CAPITAL MANAGEMENT, LLCLess than 5%Code NAYesEXECUTIVE VICE PRESIDENT10/2021Schedule APDF page 42
7VIRTUS PARTNERS, INC.SOLE MEMBERDomestic entityWESTCHESTER CAPITAL MANAGEMENT, LLC75% or moreCode EYesSOLE MEMBER10/2021Schedule APDF page 42
8RICHARD WILLIAM SMIRLEXECUTIVE VICE PRESIDENTIndividualWESTCHESTER CAPITAL MANAGEMENT, LLCLess than 5%Code NAYesEXECUTIVE VICE PRESIDENT10/2021Schedule APDF page 42
9ANDRA CYNTHIA PURKALITISEXECUTIVE VICE PRESIDENT AND CHIEF LEGAL OFFICERIndividualWESTCHESTER CAPITAL MANAGEMENT, LLCLess than 5%Code NAYesEXECUTIVE VICE PRESIDENT AND CHIEF LEGAL OFFICER11/2023Schedule APDF page 42
10VIRTUS INVESTMENT PARTNERS, INC.SOLE SHAREHOLDERDomestic entityVIRTUS PARTNERS, INC.75% or moreCode EYesSOLE SHAREHOLDER10/2021Schedule BPDF page 42

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 3/30/2026 11:52:28 AM

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.