The Mather Group Named to Crain’s Fast 50 for Fifth Consecutive Year

Firm’s Growth Driven by Why-Powered Wealth Management, Technology Innovation, and People-Centric Culture

CHICAGO--(BUSINESS WIRE)--The Mather Group, LLC (TMG), one of the nation’s fastest growing Registered Investment Advisory firms, is proud to announce its inclusion on Crain’s Chicago Business Fast 50 list for the fifth consecutive year. This recognition underscores the firm’s continued commitment to purpose-driven growth, innovation, and exceptional client service.

Since its founding in 2011, TMG has grown from $150 million to over $15 billion of assets under management and advisement across 12 offices nationwide. This is a result of the firm’s unwavering focus on delivering Why-Powered Wealth Management, a personalized, values-aligned approach to financial planning designed to help clients live with clarity, confidence, and purpose.

Putting Purpose at the Center

“At TMG, we believe wealth management should be powered by your ‘why’—your goals, your values, and the life you want to live,” said Jennifer des Groseilliers, Chief Executive Officer. “That belief drives everything we do, from the way we build financial strategies to how we invest in our people and technology.”

TMG offers a holistic, all-inclusive approach to investment management, tax strategy, and estate planning, all for a transparent fee. As a fee-only fiduciary, the firm provides real, objective advice so clients can focus on what truly matters.

Simplifying the Complex, Centering the Client

“Our Why-Powered Wealth Management platform helps clients cut through complexity to gain a clear view of their entire financial life,” said Ryan Wickert, Chief Financial Officer. “With one comprehensive fee and a team that quarterbacks every aspect of their plan, our clients can spend less time managing money and more time living with intention.”

Strategic Investments in People and Technology

TMG’s consistent growth is fueled by a dual investment strategy: developing exceptional talent and leveraging technology to enhance the client experience.

“We believe the client experience starts with empowered employees,” said Kristen Oziemkowski, Chief Operating Officer. “From onboarding to ongoing education, we’ve made strategic investments to help our people deliver personalized, values-aligned service at scale.”

On the technology side, TMG continues to implement advanced data science and machine learning tools that simplify internal processes while elevating client interactions within a secure, compliant, and scalable infrastructure.

Celebrating Five Years of Recognition and Looking Ahead

Crain’s Chicago Business is a leading source of news and insight for business and civic leaders, policymakers, and elected officials across the region. The Fast 50 list honors Chicago-based companies that demonstrate exceptional growth, scalability, and business leadership. TMG’s inclusion in Crain’s Fast 50 for the fifth straight year reflects the firm’s consistent performance, strategic acquisitions, and national expansion. Crain's is not affiliated with TMG, and the Crain’s award is not based on client evaluations of our firm, TMG has not made any payments for or in anticipation of the award.

About The Mather Group, LLC

The Mather Group, LLC (TMG) is a fee-only wealth management firm that serves high-net-worth individuals and families. Committed to simplifying clients’ financial lives, the firm offers a comprehensive suite of integrated services. TMG’s in-house team of seasoned professionals brings deep expertise across investment management, financial planning, tax strategy, estate planning, and more—providing truly holistic guidance. As a federally registered investment adviser under the Investment Advisers Act of 1940, TMG delivers both discretionary and non-discretionary investment management tailored to each client’s unique goals and values.