A New York investment firm just wrote a very large check for a Columbus money manager, and it is not asking anyone to pack up their desks.
First Eagle Investments, based in New York City, has completed its purchase of Columbus-based Diamond Hill Investment Group in an all-cash deal that pays shareholders $175 per share and values the firm at roughly $473 million. The companies say Diamond Hill will keep operating from the Arena District in Columbus and will remain under the leadership of CEO Heather Brilliant.
Deal details
The transaction officially closed on April 22, 2026, when Diamond Hill shareholders received $175 per share in cash, according to a Form 8-K filed with the Securities and Exchange Commission. With that closing, Diamond Hill’s common shares stopped trading on the Nasdaq exchange. The filing states that the parties met customary closing conditions before finalizing the deal.
Leadership and scale
First Eagle says the acquisition “markedly increases” its footprint in traditional fixed income and helps build a combined platform with roughly $213 billion in assets under management and advisement as of March 31, 2026, according to a press release from First Eagle Investments. “Serving clients is our primary purpose at First Eagle,” President and CEO Mehdi Mahmud said in the announcement, casting the deal as a scale play in a consolidating industry.
The same release notes that Heather Brilliant will continue to lead Diamond Hill while also stepping into a newly created chief operating officer role at First Eagle, a dual post that keeps her in charge in Columbus while adding responsibilities at the parent company.
What it means for Columbus
Both firms have emphasized that Diamond Hill will retain its Columbus headquarters and its investment teams, which local coverage has framed as keeping an experienced asset-management employer in the Arena District. Diamond Hill’s own corporate materials reference its Columbus office in the Arena District, and Columbus Business First reported on the closing and the roughly $473 million valuation. Company statements also stress that Diamond Hill’s core investment philosophy is not slated to change during integration.
Why First Eagle is buying
The deal follows a majority investment in First Eagle by private equity firm Genstar Capital last year. Company leaders have said that investment gives First Eagle the capital to pursue growth through acquisitions and product expansion. In that context, executives have framed the Diamond Hill purchase as a way to add fixed income scale and complementary U.S. equity capabilities at a time when larger asset managers are continuing to bulk up as the industry chases scale.
