The Mather Group, LLC
Firm details
- Headquarters
- Chicago, Illinois
- CRD number
- 156005
- Registered since
- February 18, 2011
- Website
- www.themathergroup.com
- Custodians
- FIDELITY DISTRIBUTORS COMPANY LLC, CHARLES SCHWAB & CO., INC.
- Fee structure
- Percentage of AUM, Hourly Charges, Fixed Fees, Other
- Client types
- HNWI90.84%
- Individuals9.1%
- Corporations / Businesses0.04%
- Pension & Profit Sharing Plans0.01%
- Charitable Organizations0.01%
- Services
- Financial PlanningPortfolio Management for IndividualsSelection of Other AdvisersPublication of PeriodicalsEducational Seminars / Workshops
Firm profile
FINTRXOverview
The Mather Group, LLC is an independent registered investment adviser organized as an LLC and SEC-registered since 2011. The firm serves individual and family clients and describes itself as a capital allocator that combines financial planning, portfolio management for individuals and small businesses, and the selection of third‑party advisers. It also produces written commentary and runs educational seminars and workshops. The firm reports being an active ESG investor and offers a mix of fee arrangements, including AUM‑based fees, hourly charges, fixed fees and other billing structures. The practice has received industry recognition across multiple outlets: Financial Times (Top 300 RIA Firms, 2020), FA Magazine (Top RIA Firms, 2020), Barron’s (Top 100 RIA Firms, 2021–2025), and Forbes (America’s Top RIA Firms, 2023 and 2024).
Assets & Accounts
Public Holdings
Investments & Alternatives
Location & Offices
Investment profile
FINTRXTraditional investments used
Alternative investments used
Active ESG investor
Technology & operations
FINTRXCRM & tech providers
TAMPs used
Clients
FINTRXClient base
Client personas
Asset composition
- Public Funds/Mutual Funds76%
- Exchange Traded Equities12%
- US Government Bonds4%
- State & Local Bonds3%
- Investment Grade Corp Bonds2%
Owners & executives
3 of 5
Kristen Oziemkowski
Chief Operating OfficerCRD 6840356

Timothy Ayles
Chief Investment OfficerCRD 5549384

Jennifer Des Groseilliers
Chief Executive OfficerCRD 4489164
Contacts
3 of 120Harrison Shibley
Client AssociateCRD 7811602

Cherie Stokes
Client Services ManagerCRD 2510104
Timothy Bates
Senior Wealth AdvisorCRD 5850548
Wealth teams
FINTRXNewly hired reps
FINTRXRecent M&A activity
FINTRXRecent filings
FINTRXAwards
FINTRXETF holdings
1 of 759Active vs passive
$10.8B in ETFs
84%
$9.1B
14%
$1.7B
| ETF | Provider | Style | Category | Value | Shares | % of portfolio |
|---|---|---|---|---|---|---|
| VANGUARD GROWTH INDEX FUND (VUG) | Vanguard | Passive | Large Growth | $1.3B | 15,202,294 | 12.17% |
Location
Chicago, IL
Cook
Location
Chicago, IL
Headquartered in Chicago, IL, anchoring the Chicago-Naperville, IL-IN-WI metro in the Midwest.
- Metro area
- Chicago-Naperville, IL-IN-WI
- Region
- Midwest
- County
- Cook
- Address
- 353 N Clark St
- Time zone
- CT (UTC-6)
- Office locations
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