MAI Capital Management has acquired OG Private Wealth, a fee-only registered investment adviser with approximately $551 million in assets under management, expanding MAI’s presence in California and strengthening its capabilities for entrepreneurs, business owners and affluent families. Terms of the transaction were not disclosed.
OG Private Wealth has offices in Chico and Hermosa Beach, California, and serves more than 300 households nationwide.
The firm joined MAI effective August 14, 2026.
OG Private Wealth was founded by brothers Ryan O’Donnell and Mike O’Donnell following careers at wealth management firms including Merrill Lynch.
The firm was built around a planning-first model that combines investment management with broader wealth planning.
Its services include cash flow oversight, estate planning, pre-sale planning and tax-efficient strategies.
OG Private Wealth has grown organically through client relationships and serves entrepreneurs, executives and affluent families across the country.
The firm has an especially established presence in Northern California, Los Angeles and Miami, complementing MAI’s existing footprint in those markets.
Following the transaction, Ryan O’Donnell and Mike O’Donnell will serve as Market Leaders at MAI Capital Management.
The deal is intended to give OG Private Wealth access to a broader set of institutional investment capabilities, family office resources and specialized expertise while preserving the client experience and culture built by the firm.
The relationship between the firms also predates the transaction.
The O’Donnell brothers have longstanding relationships with MAI’s leadership team, which deepened following MAI’s acquisition of Evoke Advisors.
Those relationships helped reinforce OG Private Wealth’s decision to join MAI as it looked for a larger platform capable of supporting continued growth without changing its approach to client service.
The acquisition adds to MAI’s broader national expansion.
As of June 30, 2026, MAI reported nearly $80.4 billion in total assets, including $73.8 billion in assets under management and $6.6 billion in assets under advisement.
The firm operates 42 offices across the United States and has more than 700 employees.
Founded in 1973, MAI provides wealth management and advisory services centered on financial planning, investment management and integrated solutions for clients with complex financial needs.
The addition of OG Private Wealth expands that platform with another adviser team focused on entrepreneurs, founders and affluent families whose needs can extend beyond traditional portfolio management.
KEY QUOTES:
“Ryan, Mike and their team have built a business that’s deeply rooted in trust. Their clients tend to have sophisticated wealth needs, and OG Private Wealth has made it their purpose to help clients navigate that complexity.”
“That commitment to long-term relationships and personalized planning is what we look for when acquiring firms, and we’re pleased to expand what’s possible for their clients while preserving the culture that makes OG Private Wealth special.”
Rick Buoncore (pictured above), Chairman and CEO of MAI Capital Management
“We were looking to expand our capabilities, but we weren’t willing to compromise the culture or client experience that has defined our firm.”
“I’ve known the MAI and Evoke team for years and seeing how they built their businesses gave us confidence this was the right home. Joining MAI, one of the leading firms in the industry, gives us access to robust institutional investment capabilities, family office resources and specialized expertise that will help us serve our clients for years to come.”
Ryan O’Donnell, Market Leader at MAI Capital Management
“After building OG Private Wealth for more than 15 years, we wanted a partner that could help us grow while allowing us to stay true to the principles we believe in.”
“The families and founders we work with have needs that extend well beyond a traditional investment portfolio, and they expect advice and services that rise to meet that complexity. With MAI behind us, we have the support to deliver on that commitment with more confidence than ever.”
Mike O’Donnell, Market Leader at MAI Capital Management
