Firm profile

Ardea Investment Management

SYDNEY, NSW, AustraliaCRD 312601Registration Status: ApprovedEffective since March 19, 2021SEC # 801-120437Latest ADV September 23, 2026

Ardea Investment Management is an SEC registered investment adviser with a primary office location in Sydney, NSW, Australia. Its latest Form ADV filing, dated September 23, 2026, reports $3.5B in regulatory assets under management, 29 employees, 2 offices, and 10 accounts.

Assets Under Management
$3.5B
Employees
29
Offices
2 offices
Total Clients
11

Associated firm names

3 names listed
  • ARDEA INVESTMENT MANAGEMENT
  • ASSET MANAGER
  • ARDEA INVESTMENT MANAGEMENT PTY LIMITED

Leadership

3 roles identified
CEOStephen R. Clout
CCOStephen R. Clout
COOStephen R. Clout

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

SYDNEY, NSW, Australia

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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.

Australia

SYDNEY, NSWPrimary office

United Kingdom

LONDON

2 office records listed · 2 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$3.5Bas of September 23, 2026
Discretionary100.0%
$3.5B
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 segmentCorporations represent 36.4% of total clients.
Top client categories% of clientsClients
1
Corporations
36.4%
4
2
Pooled Investment Vehicles
27.3%
3
3
Government
18.2%
2
4
Insurance Cos.
18.2%
2
Categories with <5 clients
Insurance companies<5 clients
State or municipal government entities (including govt. pension 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$3.5B
Total Accounts10
10Y AUM Change$-11.4B (-76.7%)

Private Funds

Private funds reported by Ardea Investment Management

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Employee Growth by Quarter

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

Total Employees29
Clients per Employee0:1
10Y Employee Change+9 (+45.0%)

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%
FIDANTE PARTNERS ARDEA HOLDINGS PTY LIMITEDDirect owner · Schedule AInterest in ARDEA INVESTMENT MANAGEMENT
50% to < 75%
ALEXANDER FAMILY INVESTMENTS PTY LTD.Direct owner · Schedule AInterest in ARDEA INVESTMENT MANAGEMENT
25% to < 50%
HAMLYN GROUP PTY LTDDirect owner · Schedule AInterest in ARDEA INVESTMENT MANAGEMENT
5% to < 10%
S&K CLOUT NOMINEES PTY LTDDirect owner · Schedule AInterest in ARDEA INVESTMENT MANAGEMENT
5% to < 10%
BENJAMIN JOHN ALEXANDERIndirect owner · Schedule BInterest in ALEXANDER FAMILY INVESTMENTS PTY LTD.
75%+
CHALLENGER LIMITEDIndirect owner · Schedule BInterest in CHALLENGER GROUP HOLDINGS LIMITED
75%+
Tamar HamlynIndirect owner · Schedule BInterest in HAMLYN GROUP PTY LTD
75%+
Stephen Ross CloutIndirect owner · Schedule BInterest in S&K CLOUT NOMINEES PTY LTD
75%+
FIDANTE PARTNERS HOLDINGS PTY LIMITEDIndirect owner · Schedule BInterest in FIDANTE PARTNERS ARDEA HOLDINGS PTY LIMITED
75%+
CHALLENGER FUNDS MANAGEMENT HOLDINGS PTYIndirect owner · Schedule BInterest in FIDANTE PARTNERS HOLDINGS PTY LIMITED
75%+
CHALLENGER GROUP HOLDINGS LIMITEDIndirect owner · Schedule BInterest in CHALLENGER FUNDS MANAGEMENT HOLDINGS PTY
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 Ardea Investment Management.

Reported ownership and control details

Form ADV · Filing date 2026-09-23 · Schedules A and B

16 entries
#Owner / person & roleInterest in entityReported interestControl personTitle / status acquiredSource
1FIDANTE PARTNERS ARDEA HOLDINGS PTY LIMITEDOWNERForeign entityARDEA INVESTMENT MANAGEMENT50% to less than 75%Code DYesOWNER11/2008Schedule APDF page 21
2ALEXANDER FAMILY INVESTMENTS PTY LTD.OWNERForeign entityARDEA INVESTMENT MANAGEMENT25% to less than 50%Code CYesOWNER11/2008Schedule APDF page 21
3HAMLYN GROUP PTY LTDOWNERForeign entityARDEA INVESTMENT MANAGEMENT5% to less than 10%Code AYesOWNER11/2008Schedule APDF page 21
4S&K CLOUT NOMINEES PTY LTDOWNERForeign entityARDEA INVESTMENT MANAGEMENT5% to less than 10%Code AYesOWNER11/2008Schedule APDF page 21
5BENJAMIN JOHN ALEXANDERCO-CIOIndividualARDEA INVESTMENT MANAGEMENTLess than 5%Code NAYesCO-CIO11/2008Schedule APDF page 21
6Stephen Ross CloutCEO/CCO/COOIndividualARDEA INVESTMENT MANAGEMENTLess than 5%Code NAYesCEO/CCO/COO11/2008Schedule APDF page 21
7Gopinath KarunakaranCO-CIOIndividualARDEA INVESTMENT MANAGEMENTLess than 5%Code NAYesCO-CIO06/2017Schedule APDF page 21
8Nicholas Han Sheng GanDIRECTORIndividualARDEA INVESTMENT MANAGEMENTLess than 5%Code NAYesDIRECTOR09/2024Schedule APDF page 21
9PAULINE BERNADETTE VAMOSDIRECTORIndividualARDEA INVESTMENT MANAGEMENTLess than 5%Code NAYesDIRECTOR03/2025Schedule APDF page 21
10BENJAMIN JOHN ALEXANDEROWNERIndividualALEXANDER FAMILY INVESTMENTS PTY LTD.75% or moreCode EYesOWNER11/2008Schedule BPDF page 22
11CHALLENGER LIMITEDOWNERForeign entityCHALLENGER GROUP HOLDINGS LIMITED75% or moreCode EYesOWNER11/2008Schedule BPDF page 22
12Tamar HamlynOWNERIndividualHAMLYN GROUP PTY LTD75% or moreCode EYesOWNER10/2008Schedule BPDF page 22
13Stephen Ross CloutOWNERIndividualS&K CLOUT NOMINEES PTY LTD75% or moreCode EYesOWNER11/2008Schedule BPDF page 22
14FIDANTE PARTNERS HOLDINGS PTY LIMITEDOWNERForeign entityFIDANTE PARTNERS ARDEA HOLDINGS PTY LIMITED75% or moreCode EYesOWNER11/2008Schedule BPDF page 22
15CHALLENGER FUNDS MANAGEMENT HOLDINGS PTYOWNERForeign entityFIDANTE PARTNERS HOLDINGS PTY LIMITED75% or moreCode EYesOWNER11/2008Schedule BPDF page 22
16CHALLENGER GROUP HOLDINGS LIMITEDOWNERForeign entityCHALLENGER FUNDS MANAGEMENT HOLDINGS PTY75% or moreCode EYesOWNER11/2008Schedule BPDF page 22

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 9/23/2026 9:44:24 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.