Firm profile

Aon Investments USA Inc..

CHICAGO, ILCRD 105596Registration Status: ApprovedEffective since May 21, 1982SEC # 801-17219Latest ADV March 25, 2026

Aon Investments USA Inc. is an SEC registered investment adviser organized as a corporation with a primary office location in Chicago, IL. Its latest Form ADV filing, dated March 25, 2026, reports $151.0B in regulatory assets under management, 255 employees, 15 offices, and 300 accounts.

Assets Under Management
$151.0B
Employees
255
Offices
15 offices
Total Clients
579

Associated firm names

5 names listed
  • AON
  • HEWITT ENNISKNUPP, INC.
  • ENNIS KNUPP & ASSOCIATES INC
  • AON INVESTMENTS USA INC.

Leadership

4 roles identified
CCOMatthew B. Wallace
COODavid J. Testore
CIOKevin M. Zagortz

Advisory services offered

6 types reported
Educational seminars/workshops
Pension consulting services
Portfolio management for businesses

Fee models offered

3 types reported
Asset based fees
Fixed fees
Hourly charges

Offices & Contact

Primary office

CHICAGO, Illinois, 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.

Illinois

CHICAGOPrimary office · BANNOCKBURN

California

SAN FRANCISCO · IRVINE

Connecticut

NORWALK

Florida

JACKSONVILLE

Georgia

ATLANTA

Massachusetts

BURLINGTON · BOSTON

Minnesota

BLOOMINGTON

Missouri

ST LOUIS

New Jersey

BERKELEY HEIGHTS

New York

NEW YORK

North Carolina

RALEIGH

Washington

SEATTLE

15 office records listed · 15 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$151.0Bas of March 25, 2026
Discretionary78.5%
$118.5B
78% of total RAUM78.5%
Non-discretionary21.5%
$32.5B
22% of total RAUM21.5%
Regulatory assets under management are split between discretionary and non-discretionary assets.

Client Coverage Demographics

Top client segmentPension Plans represent 47.0% of total clients.
Top client categories% of clientsClients
1
Pension Plans
47.0%
272
2
Corporations
24.0%
139
3
Irrevocable Trusts/Estates
12.4%
72
4
Government
5.5%
32
5
Pooled Investment Vehicles
5.4%
31
Categories with <5 clients
High net worth individuals (HNWI)<5 clients
Individuals (other than high net worth individuals)<5 clients
Insurance companies<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$151.0B
Total Accounts300
10Y AUM Change+$82.3B (+119.9%)

Private Funds

Private funds reported by Aon Investments USA Inc..

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Employee Growth by Quarter

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

Total Employees255
Clients per Employee2:1
10Y Employee Change-100 (-28.2%)

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%
AON CONSULTING, INC.Direct owner · Schedule AInterest in AON INVESTMENTS USA INC.
75%+
AON PLCIndirect owner · Schedule BInterest in RANDOLPH FINANCE UNLIMITED COMPANY
75%+
AON GLOBAL HOLDINGS PLCIndirect owner · Schedule BInterest in AON GLOBAL HOLDINGS INTERMEDIARIES LIMITED
75%+
AON CORPORATIONIndirect owner · Schedule BInterest in AON GROUP, INC.
75%+
AON GROUP, INC.Indirect owner · Schedule BInterest in AON CONSULTING, INC.
75%+
AON GLOBAL LIMITEDIndirect owner · Schedule BInterest in AON GLOBAL HOLDINGS PLC
75%+
RANDOLPH FINANCE UNLIMITED COMPANYIndirect owner · Schedule BInterest in AON GLOBAL LIMITED
75%+
AON GLOBAL HOLDINGS INTERMEDIARIES LIMITEDIndirect owner · Schedule BInterest in AON NORTH AMERICA, INC.
75%+
AON NORTH AMERICA, INC.Indirect owner · Schedule BInterest in AON CORPORATION
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 Aon Investments USA Inc...

Reported ownership and control details

Form ADV · Filing date 2026-03-25 · Schedules A and B

17 entries
#Owner / person & roleInterest in entityReported interestControl personTitle / status acquiredSource
1DAVID JONATHAN TESTORECHIEF OPERATING OFFICERIndividualAON INVESTMENTS USA INC.Less than 5%Code NAYesCHIEF OPERATING OFFICER08/2008Schedule APDF page 77
2RUSSELL KENNETH IVINJACKGLOBAL CHIEF INVESTMENT OFFICERIndividualAON INVESTMENTS USA INC.Less than 5%Code NAYesGLOBAL CHIEF INVESTMENT OFFICER02/2020Schedule APDF page 77
3AON CONSULTING, INC.OWNERDomestic entityAON INVESTMENTS USA INC.75% or moreCode EYesOWNER12/2010Schedule APDF page 77
4BRYAN RICHARD WARDHEAD OF U.S. INVESTMENTSIndividualAON INVESTMENTS USA INC.Less than 5%Code NAYesHEAD OF U.S. INVESTMENTS03/2024Schedule APDF page 77
5MATTHEW BRADLEY WALLACECHIEF COMPLIANCE OFFICERIndividualAON INVESTMENTS USA INC.Less than 5%Code NANoCHIEF COMPLIANCE OFFICER04/2021Schedule APDF page 77
6ARI NOAH JACOBSGLOBAL HEAD OF INVESTMENTSIndividualAON INVESTMENTS USA INC.Less than 5%Code NAYesGLOBAL HEAD OF INVESTMENTS11/2023Schedule APDF page 77
7NICOLE WILLIAMS ROBERTSONHEAD OF INVESTMENT OPERATIONS - NORTH AMERICAIndividualAON INVESTMENTS USA INC.Less than 5%Code NAYesHEAD OF INVESTMENT OPERATIONS - NORTH AMERICA10/2024Schedule APDF page 77
8BETH MARIE HALBERSTADTHEAD OF SOLUTIONSIndividualAON INVESTMENTS USA INC.Less than 5%Code NAYesHEAD OF SOLUTIONS07/2025Schedule APDF page 77
9KEVIN MICHAEL ZAGORTZUS CHIEF INVESTMENT OFFICERIndividualAON INVESTMENTS USA INC.Less than 5%Code NAYesUS CHIEF INVESTMENT OFFICER07/2025Schedule APDF page 77
10AON PLCOWNERForeign entityRANDOLPH FINANCE UNLIMITED COMPANY75% or moreCode EYesOWNER04/2020Schedule BPDF page 78
11AON GLOBAL HOLDINGS PLCOWNERForeign entityAON GLOBAL HOLDINGS INTERMEDIARIES LIMITED75% or moreCode EYesOWNER12/2021Schedule BPDF page 78
12AON CORPORATIONOWNERDomestic entityAON GROUP, INC.75% or moreCode EYesOWNER02/1997Schedule BPDF page 78
13AON GROUP, INC.OWNERDomestic entityAON CONSULTING, INC.75% or moreCode EYesOWNER12/2018Schedule BPDF page 78
14AON GLOBAL LIMITEDOWNERForeign entityAON GLOBAL HOLDINGS PLC75% or moreCode EYesOWNER03/2020Schedule BPDF page 78
15RANDOLPH FINANCE UNLIMITED COMPANYOWNERForeign entityAON GLOBAL LIMITED75% or moreCode EYesOWNER04/2020Schedule BPDF page 78
16AON GLOBAL HOLDINGS INTERMEDIARIES LIMITEDOWNERForeign entityAON NORTH AMERICA, INC.75% or moreCode EYesOWNER07/1980Schedule BPDF page 78
17AON NORTH AMERICA, INC.OWNERDomestic entityAON CORPORATION75% or moreCode EYesOWNER04/2022Schedule BPDF page 78

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 3/25/2026 1:57:03 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 one or more events below involve the firm or its supervised persons.RIA responseYes
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 actions4 Yes1 No

Has the SEC or CFTC ever:

  • C1Found you or an advisory affiliate made a false statement or omission?Yes
  • C2Found you or an advisory affiliate violated SEC or CFTC regulations or statutes?Yes
  • 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?Yes
  • 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?Yes
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
Additional DRP filings 1 source block

Verbatim excerpts from supporting DRP filings, which may concern the firm or advisory affiliates. Amounts retain their filed labels; no total or attribution is inferred.

regulatory · block 1PDF pages 79–80
Regulator name — filed text
SECURITIES AND EXCHANGE COMMISSION
Monetary/Fine Amount — filed text
$ 1,542,187.79
How was matter resolved — filed text
Decision & Order of Offer of Settlement

Action status / disposition — filed text

ON JANUARY 25, 2024, THE SEC INITIATED A SETTLED ADMINISTRATIVE PROCEEDING AGAINST AON. AON NEITHER ADMITTED NOR DENIED THE SEC'S FINDINGS. THE ORDER ALLEGED THAT AON: (I) FAILED TO "ADEQUATELY INVESTIGATE" A CLIENT'S CONCERNS ABOUT DISCREPANCIES BETWEEN HISTORICAL RETURNS AND RETURNS USED TO CALCULATE A "RISK SHARE RETURN RATE" USED TO DETERMINE EMPLOYEE CONTRIBUTIONS TO PENSIONS; (II) MADE "MATERIAL MISSTATEMENTS AND OMISSIONS" TO THE CLIENT ABOUT THE REASONS FOR REPORTING DISCREPANCIES, AND (III) IDENTIFIED REPORTING ERRORS BUT DID NOT FULLY INVESTIGATE AND DISCLOSE THE IMPACT OF THE ERRORS. AS A RESULT, THE SEC ALLEGED THAT AON VIOLATED SECTION 206(2) OF THE ADVISERS ACT. THE SEC ORDERED AON TO CEASE AND DESIST FROM COMMITTING OR CAUSING ANY VIOLATIONS AND ANY FUTURE VIOLATIONS OF THE REFERENCED SECTION, IMPOSED A CENSURE, REQUIRED DISGORGEMENT AND PRE-JUDGMENT INTEREST OF $542,187.79, AND IMPOSED A CIVIL MONETARY PENALTY OF $1,000,000.00. AS PART OF THE RESOLUTION OF THIS MATTER, THE SEC RECOGNIZED REMEDIAL EFFORTS AND AON'S COOPERATION.
Other filed details

Description of allegations — filed text

THE SECURITIES AND EXCHANGE COMMISSION ("SEC") ENTERED AN ORDER INSTITUTING ADMINISTRATIVE AND CEASE-AND-DESIST PROCEEDINGS (THE "ORDER") AGAINST AON INVESTMENTS USA INC. ("AON"). THE ORDER ALLEGED THAT AON: (I) FAILED TO "ADEQUATELY INVESTIGATE" A CLIENT'S CONCERNS ABOUT DISCREPANCIES BETWEEN HISTORICAL RETURNS AND RETURNS USED TO CALCULATE A "RISK SHARE RETURN RATE" USED TO DETERMINE EMPLOYEE CONTRIBUTIONS TO PENSIONS; (II) MADE "MATERIAL MISSTATEMENTS AND OMISSIONS" TO THE CLIENT ABOUT THE REASONS FOR REPORTING DISCREPANCIES, AND (III) IDENTIFIED REPORTING ERRORS BUT DID NOT FULLY INVESTIGATE AND DISCLOSE THE IMPACT OF THE ERRORS. AON CONSENTED TO THE SEC ORDER WITHOUT ADMITTING OR DENYING THE FINDINGS THEREIN.

Sanction detail — filed text

AON WAS ORDERED TO PAY A CIVIL MONETARY PENALTY OF $1,000,000.00, AND TO PAY DISGORGEMENT AND PRE-JUDGMENT INTEREST OF $542,187.79. AON PAID $1,542,187.79 TO THE SEC ON FEBRUARY 5, 2024.
Full extracted filing text

Includes form instructions and options. Options shown in this text do not identify which boxes were selected.

GENERAL INSTRUCTIONS
This Disclosure Reporting Page (DRP ADV) is an 
INITIAL OR
AMENDED response used to report details for affirmative responses to Items 11.C., 11.D.,
11.E., 11.F. or 11.G. of Form ADV.
Regulatory Action
Check item(s) being responded to:
11.C(1)
11.C(2)
11.C(3)
11.C(4)
11.C(5)
11.D(1)
11.D(2)
11.D(3)
11.D(4)
11.D(5)
11.E(1)
11.E(2)
11.E(3)
11.E(4)
11.F.
11.G.
Use a separate DRP for each event or proceeding . The same event or proceeding may be reported for more than one person or entity using one DRP. File
with a completed Execution Page. 
One event may result in more than one affirmative answer to Items 11.C., 11.D., 11.E., 11.F. or 11.G. Use only one DRP to report details related to the
same event. If an event gives rise to actions by more than one regulator, provide details for each action on a separate DRP.
PART I
A.  The person(s) or entity(ies) for whom this DRP is being filed is (are):
You (the advisory firm)
You and one or more of your advisory affiliates
One or more of your advisory affiliates
If this DRP is being filed for an advisory affiliate, give the full name of the advisory affiliate below (for individuals, Last name, First name, Middle name). 
If the advisory affiliate has a CRD number, provide that number. If not, indicate "non-registered" by checking the appropriate box.
ADV DRP - ADVISORY AFFILIATE
No Information Filed
This DRP should be removed from the ADV record because the advisory affiliate(s) is no longer associated with the adviser.
This DRP should be removed from the ADV record because: (1) the event or proceeding occurred more than ten years ago or (2) the adviser is
registered or applying for registration with the SEC or reporting as an exempt reporting adviser with the SEC and the event was resolved in the
adviser's or advisory affiliate's favor.
If you are registered or registering with a state securities authority , you may remove a DRP for an event you reported only in response to Item
11.D(4), and only if that event occurred more than ten years ago. If you are registered or registering with the SEC, you may remove a DRP for any
event listed in Item 11 that occurred more than ten years ago.
This DRP should be removed from the ADV record because it was filed in error, such as due to a clerical or data-entry mistake. Explain the
circumstances: 
B.
If the advisory affiliate is registered through the IARD system or CRD system, has the advisory affiliate submitted a DRP (with Form ADV, BD or U-4) to
the IARD or CRD for the event? If the answer is "Yes," no other information on this DRP must be provided.
 Yes
 No
NOTE: The completion of this form does not relieve the advisory affiliate of its obligation to update its IARD or CRD records.
PART II
1.  Regulatory Action initiated by:
SEC   
Other Federal   
State   
SRO
Foreign
(Full name of regulator, foreign financial regulatory authority, federal, state, or SRO) 
SECURITIES AND EXCHANGE COMMISSION
2.
Principal Sanction:
Civil and Administrative Penalt(ies) /Fine(s)
Other Sanctions: 
CEASE AND DESIST CENSURE DISGORGEMENT
3.
Date Initiated (MM/DD/YYYY): 
01/25/2024
 Exact
 Explanation
If not exact, provide explanation:

4.
Docket/Case Number:
ADMINISTRATIVE PROCEEDING FILE NO 3-21837
5.
Advisory Affiliate Employing Firm when activity occurred which led to the regulatory action (if applicable):
6.
Principal Product Type:
Other
Other Product Types: 
NON-DISCRETIONARY INVESTMENT ADVICE AND REPORTING.
7.
Describe the allegations related to this regulatory action (your response must fit within the space provided):
THE SECURITIES AND EXCHANGE COMMISSION ("SEC") ENTERED AN ORDER INSTITUTING ADMINISTRATIVE AND CEASE-AND-DESIST PROCEEDINGS
(THE "ORDER") AGAINST AON INVESTMENTS USA INC. ("AON"). THE ORDER ALLEGED THAT AON: (I) FAILED TO "ADEQUATELY INVESTIGATE" A CLIENT'S
CONCERNS ABOUT DISCREPANCIES BETWEEN HISTORICAL RETURNS AND RETURNS USED TO CALCULATE A "RISK SHARE RETURN RATE" USED TO
DETERMINE EMPLOYEE CONTRIBUTIONS TO PENSIONS; (II) MADE "MATERIAL MISSTATEMENTS AND OMISSIONS" TO THE CLIENT ABOUT THE REASONS
FOR REPORTING DISCREPANCIES, AND (III) IDENTIFIED REPORTING ERRORS BUT DID NOT FULLY INVESTIGATE AND DISCLOSE THE IMPACT OF THE
ERRORS. AON CONSENTED TO THE SEC ORDER WITHOUT ADMITTING OR DENYING THE FINDINGS THEREIN.
8.
Current Status?      
 Pending
 On Appeal
 Final
9.
If on appeal, regulatory action appealed to (SEC, SRO, Federal or State Court) and Date Appeal Filed:
If Final or On Appeal, complete all items below. For Pending Actions, complete Item 13 only.
10. How was matter resolved:
Decision & Order of Offer of Settlement
11. Resolution Date (MM/DD/YYYY):
01/25/2024
 Exact
 Explanation
If not exact, provide explanation:
12. Resolution Detail:
A.  Were any of the following Sanctions Ordered (check all appropriate items)?
 Monetary/Fine Amount: $ 1,542,187.79
 Revocation/Expulsion/Denial
 Disgorgement/Restitution
 Censure
 Cease and Desist/Injunction
 Bar
 Suspension
B.
Other Sanctions Ordered:
Sanction detail: if suspended, enjoined or barred, provide duration including start date and capacities affected (General Securities Principal,
Financial Operations Principal, etc.). If requalification by exam/retraining was a condition of the sanction, provide length of time given to
requalify/retrain, type of exam required and whether condition has been satisfied. If disposition resulted in a fine, penalty, restitution,
disgorgement or monetary compensation, provide total amount, portion levied against you or an advisory affiliate, date paid and if any portion
of penalty was waived: 
AON WAS ORDERED TO PAY A CIVIL MONETARY PENALTY OF $1,000,000.00, AND TO PAY DISGORGEMENT AND PRE-JUDGMENT INTEREST OF
$542,187.79. AON PAID $1,542,187.79 TO THE SEC ON FEBRUARY 5, 2024.
13. Provide a brief summary of details related to the action status and (or) disposition and include relevant terms, conditions and dates (your response
must fit within the space provided).
ON JANUARY 25, 2024, THE SEC INITIATED A SETTLED ADMINISTRATIVE PROCEEDING AGAINST AON. AON NEITHER ADMITTED NOR DENIED THE SEC'S
FINDINGS. THE ORDER ALLEGED THAT AON: (I) FAILED TO "ADEQUATELY INVESTIGATE" A CLIENT'S CONCERNS ABOUT DISCREPANCIES BETWEEN
HISTORICAL RETURNS AND RETURNS USED TO CALCULATE A "RISK SHARE RETURN RATE" USED TO DETERMINE EMPLOYEE CONTRIBUTIONS TO
PENSIONS; (II) MADE "MATERIAL MISSTATEMENTS AND OMISSIONS" TO THE CLIENT ABOUT THE REASONS FOR REPORTING DISCREPANCIES, AND (III)
IDENTIFIED REPORTING ERRORS BUT DID NOT FULLY INVESTIGATE AND DISCLOSE THE IMPACT OF THE ERRORS. AS A RESULT, THE SEC ALLEGED THAT
AON VIOLATED SECTION 206(2) OF THE ADVISERS ACT. THE SEC ORDERED AON TO CEASE AND DESIST FROM COMMITTING OR CAUSING ANY
VIOLATIONS AND ANY FUTURE VIOLATIONS OF THE REFERENCED SECTION, IMPOSED A CENSURE, REQUIRED DISGORGEMENT AND PRE-JUDGMENT
INTEREST OF $542,187.79, AND IMPOSED A CIVIL MONETARY PENALTY OF $1,000,000.00. AS PART OF THE RESOLUTION OF THIS MATTER, THE SEC
RECOGNIZED REMEDIAL EFFORTS AND AON'S COOPERATION.

* 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.