Betty Tse was promoted to investment officer for Alameda County...

Betty Tse was promoted to investment officer for Alameda County Employees’ Retirement Association, Oakland, Calif. Her new duties will include overseeing the managers for the $3.4 billion fund. Ms. Tse was a senior analyst for Alameda County, where her position remains vacant. She replaces Linda Brewton, who resigned to become manager of treasury for Cisco Systems, San Jose, Calif. Ms. Brewton will be the head administrator for its pension plans.