Chicago-based Mesirow has struck a deal to acquire Austin firm LeafHouse Financial Advisors, a move that will add roughly $23 billion in retirement assets to Mesirow’s fiduciary business. The acquisition folds LeafHouse’s adviser-facing capabilities and technology into Mesirow Fiduciary Solutions and significantly boosts the scale of the firm’s retirement-plan operations. The companies announced the agreement on Monday and said they expect the transaction to close later this year.
As first reported by Crain's Chicago Business, the LeafHouse advisory business will be folded into Mesirow’s fiduciary unit, broadening the Chicago firm’s retirement-plan footprint. Crain’s reported that the deal will add about $23 billion in retirement assets to Mesirow’s platform.
In a press release, Mesirow said its outsourced fiduciary solutions currently serve nearly 10,000 financial advisors and oversaw $115.2 billion in assets as of March 31, 2026. The firm said that figure should rise to approximately $138 billion once the LeafHouse transaction closes. Mesirow described the acquisition as a way to deepen distribution and offer more customizable retirement-plan services.
What LeafHouse brings
LeafHouse is a technology-driven retirement-plan adviser and manager that lists more than $23 billion in total assets and says it operates across dozens of recordkeeper platforms. After the deal closes, LeafHouse will operate as part of Mesirow Fiduciary Solutions, while its technology and services arm will continue building tools for advisors and institutional partners. In practical terms, Mesirow is buying both scale and a ready-made tech stack.
Deal terms and timeline
Mesirow said it will also make a strategic investment in LeafHouse Financial Services to support ongoing technology development, and the companies expect to complete the transaction in the third quarter of 2026, subject to customary closing conditions. PR Newswire notes that DLA Piper served as legal advisor to Mesirow, Dwyer Murphy Calvert LLP advised LeafHouse, and Founders Advisors served as sell-side financial adviser.
Why it matters for Chicago
The acquisition extends the reach of a Chicago-headquartered firm at a time when both scale and technology are key to winning retirement-plan mandates. Mesirow’s corporate headquarters sits at 353 North Clark Street in Chicago, and the deal highlights the firm’s strategy of combining distribution, fiduciary services and technology for plan sponsors and advisers. Mesirow has indicated in recent filings and releases that complementary acquisitions are a core part of its growth plan, and this one neatly checks that box.
Where this fits in the market
The transaction is another data point in the ongoing consolidation of the retirement-services market, as advisers and platforms buy both scale and tech capabilities. Larger roll-ups and strategic deals, including Creative Planning’s earlier acquisition of a Mesirow retirement-services unit, show firms are chasing a mix of distribution and technology to capture plan business. WealthManagement tracked that prior deal as part of a broader trend that this latest Mesirow move clearly fits into.
