Creative Planning Acquires Grassi Investment Management, Adds $1.3B in Assets

Creative Planning announced the acquisition of Santa Clara, California-based Grassi Investment Management. Photo credit: Will Crow.

Posted September 17, 2025

Overland Park-based Creative Planning has announced its next acquisition of Grassi Investment Management, located in Santa Clara, California.

The Kansas wealth management firm officially closed the deal on August 28, according to a release. The acquisition adds five employees to Creative Planning’s team and approximately $1.3 billion in assets under management. The Grassi team will help bolster Creative Planning’s West Coast operations.

Founded in 1984, Grassi specializes in investment management services for individuals, families, foundations and institutions.

“Grassi Investment Management’s commitment to personalized client service and expertise in customized portfolio solutions make them exactly the kind of client-first firm we seek in our partnerships,” President and CEO of Creative Planning, Peter Mallouk, said in the release. “We’re excited to welcome their experienced team and continue the exceptional service their clients have trusted for generations.”

Decerno Advisors served as the exclusive advisor to Grassi Investment Management in the transaction.

Grassi is Creative Planning’s fourteenth announced acquisition deal in the last two years. Most recently, the firm announced it acquired Hawaii-based Mosaic Pacific. Creative Planning has also completed acquisitions with Monterey, California-based Monterey Private Wealth and Pleasanton, California-based Maxwell Wealth Strategies in April and February, respectively.

Creative Planning and its affiliates have more than $370 billion in combined assets under management and advisement across all 50 states and 90 countries as of June 30.