The Mather Group Ranked Fastest-Growing RIA in the Country

CHICAGO--()--The Mather Group (TMG), a boutique fee-only wealth management firm with more than 60 employees across 11 cities in the US, was featured as the fastest growing registered investment advisor (RIA) in the country by Investment News. With 180% growth from 2018, The Mather Group surpassed all other $1B+ fee-only RIAs in the nation.

The Mather Group is a family-owned firm that broke away from Wall Street in 2011 to become a fee-only, independent SEC-Registered Investment Advisor. Founding Partner Stewart Mather, 41, was recently recognized as one of America’s Top 100 Independent Advisors by Barron’s for the second year in a row.

Over the past year, The Mather Group acquired both Berman Investment Advisors, a financial planning firm with over $1 billion in assets under management (AUM), as well as Astraeus Advisers, a multifamily office with more than $1 billion AUM. These acquisitions allowed TMG to launch TMG Family Office, which provides ultra-affluent families and individuals with a broad set of services—far beyond the scope of traditional private banks—all under one roof. Today, TMGFO advises 18 families with more than $5 billion in collective assets.

Acquiring Berman Investment Advisors and Astraeus Advisers, two well respected RIAs, has allowed us to build TMG Family Office on a proven, strong foundation. The two firms have been working with families of significant wealth for decades and will bring invaluable experience to this new business unit,” said Mather.

TMG and TMG Family Office anticipate $5 Billion of organic AUM growth over the next 36 months. TMG also plans to continue its expansion plan with additional mergers and acquisitions. “The next stage of The Mather Group’s evolution is continuing to develop partnerships with like-minded, fee-only founders who are fiercely committed to remaining independent and never selling out to private equity and Wall Street,” adds Mather.

Mather attributes his firm’s recognition and success first and foremost to their strict adherence to a fiduciary standard, followed closely by their in-house, next-generation staff of certified financial planners, certified public accounts, tax attorneys, estate planning attorneys, and financial professionals. The average owner of an RIA is 51 — at The Mather Group, it’s 38.

We’ve quickly learned many RIAs are more inclined to align with a young founder who can provide a stable succession plan for their business, clients and employees,” says Mather. “My team and I have at least another three decades of our career ahead of us—sellers know we’re not cashing in on their legacy in ten years.”


Headquartered in Chicago, with professionals in Houston, Dallas, Atlanta, Miami, LA, Minneapolis, Washington DC, NYC, St. Louis and the San Francisco Bay Area, The Mather Group is a fiduciary-only firm serving affluent and ultra-affluent families and individuals. Founded in 2011 with $150 million in assets under advisement, TMG has grown to over $7.5 billion in assets under advisement. TMG’s in-house attorneys, CPAs and other professionals simplify their clients' lives by providing a comprehensive suite of services under one roof.

TMG Family Office is a fiduciary-only multi-family office advising 18 families of significant wealth. TMGFO’s in-house attorneys, CPAs and other professionals simplify their clients lives through services as simple as bill payment, or as complex as tax advisory, private aircraft acquisition and estate planning. To learn more, visit


Media Contact: Gabriella Savino | Email: | Phone: 312.757.4372


Media Contact: Gabriella Savino | Email: | Phone: 312.757.4372