Firm profile

Acropolis Investment Management, L.L.C.

CHESTERFIELD, MOCRD 121307Registration Status: ApprovedEffective since August 27, 2002SEC # 801-61444Latest ADV March 26, 2026

Acropolis Investment Management, L.L.C. is an SEC registered investment adviser organized as a limited liability company with a primary office location in Chesterfield, MO. Its latest Form ADV filing, dated March 26, 2026, reports $2.6B in regulatory assets under management, 44 employees, 1 office, and 3,984 accounts.

Assets Under Management

$2.6B

Employees

Offices

1 office

Total Clients

1,045

Associated firm names

3 names listed

ACROPOLIS INVESTMENT MANAGEMENT
ULLICO RETIREMENT SOLUTIONS ("URS")
ACROPOLIS INVESTMENT MANAGEMENT, L.L.C.

Leadership

2 roles identified

CCORobert S. Fleming

CIODavid B. Ott

Advisory services offered

5 types reported

Educational seminars/workshops

Financial Planning Services

Portfolio management for businesses

Fee models offered

2 types reported

Asset based fees

Fixed fees

Offices & Contact

Primary office

CHESTERFIELD, Missouri, 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.

View locations

Missouri

CHESTERFIELDPrimary 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

Phone888-882-0072 WebsiteVisit website LinkedInView profile

Regulatory Assets Under Management Breakdown

Total regulatory assets under management$2.6Bas of March 26, 2026

Discretionary100.0%

$2.6B

100% of total RAUM100.0%

Non-discretionary0.0%

0% of total RAUM0.0%

All regulatory assets under management are discretionary.

Client Coverage Demographics

Top client segmentHNWI represent 60.9% of total clients.

Top client categories% of clientsClients

HNWI

60.9%

636

Individuals

38.4%

401

Charitable

0.8%

Categories with <5 clients

Corporations or other businesses not listed above<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$2.6B

Total Accounts3,984

10Y AUM Change+$1.5B (+131.7%)

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Employee Growth by Quarter

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

Total Employees44

Clients per Employee24:1

10Y Employee Change+14 (+46.7%)

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.

Reported ownership ranges

Highlighted bands show the percentage range reported in Form ADV.

0%25%50%75%100%

CHRISTOPHER BART LISSNERDirect owner · Schedule AInterest in ACROPOLIS INVESTMENT MANAGEMENT

25% to < 50%

DAVID BAKER OTTDirect owner · Schedule AInterest in ACROPOLIS INVESTMENT MANAGEMENT

25% to < 50%

DANNELLE DYAN WARDDirect owner · Schedule AInterest in ACROPOLIS INVESTMENT MANAGEMENT

10% to < 25%

MICHAEL TIMOTHY LISSNERDirect owner · Schedule AInterest in ACROPOLIS INVESTMENT MANAGEMENT

10% to < 25%

MARIE L TUSTINDirect owner · Schedule AInterest in ACROPOLIS INVESTMENT MANAGEMENT

5% to < 10%

CLIFF J. REYNOLDSDirect owner · Schedule AInterest in ACROPOLIS INVESTMENT MANAGEMENT

5% to < 10%

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 Acropolis Investment Management, L.L.C..

No indirect ownership information reported in the source’s Schedule B.

Reported ownership and control details

Form ADV · Filing date 2026-03-26 · Schedules A and B

7 entries

#	Owner / person & role	Interest in entity	Reported interest	Control person	Title / status acquired	Source
1	CHRISTOPHER BART LISSNERMANAGING MEMBER & PRESIDENTIndividual	ACROPOLIS INVESTMENT MANAGEMENT	25% to less than 50%Code C	Yes	MANAGING MEMBER & PRESIDENT08/2002	Schedule APDF page 21
2	DAVID BAKER OTTMEMBER & CHIEF INVESTMENT OFFICERIndividual	ACROPOLIS INVESTMENT MANAGEMENT	25% to less than 50%Code C	Yes	MEMBER & CHIEF INVESTMENT OFFICER08/2002	Schedule APDF page 21
3	DANNELLE DYAN WARDMEMBERIndividual	ACROPOLIS INVESTMENT MANAGEMENT	10% to less than 25%Code B	Yes	MEMBER08/2002	Schedule APDF page 21
4	MICHAEL TIMOTHY LISSNERMEMBERIndividual	ACROPOLIS INVESTMENT MANAGEMENT	10% to less than 25%Code B	Yes	MEMBER01/2003	Schedule APDF page 21
5	ROBERT STANLEY FLEMINGCHIEF COMPLIANCE OFFICERIndividual	ACROPOLIS INVESTMENT MANAGEMENT	Less than 5%Code NA	Yes	CHIEF COMPLIANCE OFFICER07/2022	Schedule APDF page 21
6	MARIE L TUSTINMEMBERIndividual	ACROPOLIS INVESTMENT MANAGEMENT	5% to less than 10%Code A	Yes	MEMBER01/2023	Schedule APDF page 21
7	CLIFF J. REYNOLDSMEMBERIndividual	ACROPOLIS INVESTMENT MANAGEMENT	5% to less than 10%Code A	Yes	MEMBER01/2023	Schedule APDF page 21

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 3/26/2026 10:01:08 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.