State of Michigan Retirement System grew its holdings in shares of Exelixis, Inc. (NASDAQ:EXEL – Get Rating) by 1.2% in the fourth quarter, HoldingsChannel reports. The fund owned 82,116 shares of the biotechnology company’s stock after buying an additional 1,000 shares during the period. State of Michigan Retirement System’s holdings in Exelixis were worth $1,317,000 […]