Andrew “Buddy” Donohue, director of the Securities and Exchange Commission’s Division of Investment Management, is leaving the agency in November.

As head of Investment Management since April 2006, the SEC notes in a Tuesday, August 17, release that Donohue helped develop significant regulations governing the $39 trillion asset management industry–including investor-oriented rules to improve oversight of money market funds, increasing investment advisor custody controls, and curtailing investment advisor “pay-to-play” abuses.

The SEC also implemented under Donohue’s leadership a new mutual fund summary prospectus and investment advisor disclosure brochure, proposed to replace rule 12b-1 mutual fund distribution fees, and issued proposed rule amendments to improve information in target date fund advertisements and marketing.

SEC Chairman Mary Schapiro said in the news release, “Buddy has been an effective leader and investor advocate during his tenure at the Commission. His vast knowledge of mutual funds and the investment advisory landscape has been invaluable in advancing several vital regulatory initiatives.”