Jason Brady will step down later this year as CEO and president of Santa Fe, N.M.-based Thornburg Investment Management.
Mr. Brady will stay on in those roles while a search for his successor is conducted to ensure a smooth transition, according to a Thornburg news release.
Mr. Brady joined Thornburg in 2006 and headed the firm for nearly eight years, the news release said.
A spokesman couldn't immediately be reached for details about the search.
Thornburg reported client assets of $42 billion as of April 30.