Public Sector Pension Investment Board lowered its stake in MedAssets, Inc. (NASDAQ:MDAS) by 37.4% during the fourth quarter, according to its most recent disclosure with the SEC. The firm owned 41,384 shares of the company's stock after selling 24,700 shares during the period. Public Sector Pension Investment Board's holdings in MedAssets were worth $1,280,000 as [...]