Tamarack Scientific Co. Inc. , Corona, Calif., hired Diversified...

Tamarack Scientific Co. Inc., Corona, Calif., hired Diversified Investment Advisors as bundled provider of its 401(k) and profit-sharing plans, which have a combined $8 million, said Debbie Blanchard, controller. The plans switched from Union Bank of California because officials at the plans were not satisfied with the bank's service, Ms. Blanchard said. She declined to elaborate. Joanne Curran, spokeswoman for Union Bank, did not return calls by press time seeking comment.