David C. Turner, who for the past three years has overseen the $7...

David C. Turner, who for the past three years has overseen the $7 billion alternative investment program at the $49.2 billion Michigan Department of Treasury, Bureau of Investments, Lansing, is leaving to become director of the private equity group at WestAM, a new position. Terry Stanton, spokesman at the bureau, said an announcement about Mr. Turner’s replacement will be made Monday.