Illinois Municipal Retirement Fund bought a new stake in Lamb Weston Holdings, Inc. (NYSE:LW - Get Rating) in the third quarter, according to the company in its most recent 13F filing with the Securities and Exchange Commission. The firm bought 7,915 shares of the specialty retailer's stock, valued at approximately $612,000. A number of other institutional investors and hedge funds also recently made changes to their positions in the company. Vanguard Group Inc. lifted its stake in shares of Lamb Weston by 1.2% in the 1st quarter.