Christopher M. DeRose resigned as CEO of the Ohio Public Employees Retirement System, Columbus, to pursue a new opportunity, confirmed spokeswoman Julie Graham-Price.
Mr. DeRose expects to leave in the next several months. A specific departure date and transition plan will be made with the $75.7 billion system's board of trustees, according to Ms. Graham-Price.
An interim CEO will be named after the board's Feb. 16 meeting, and a nationwide search is expected.
Mr. DeRose joined Ohio PERS in September 2006 from the Michigan Employees' Retirement System, Lansing, where he was director and CEO.
Efforts to reach Mr. DeRose were unsuccessful.
