RPT-UPDATE 1-Commodities, precious metals funds outflows biggest since 2013 -Lipper

(Repeats Thursday story for wider distribution. No changes to text.) By Sam Forgione NEW YORK, May 21 (Reuters) - Investors in U.S.-based funds pulled $597 million out of funds that specialize in commodities and precious metals in the week ended May 20, data from Thomson Reuters' Lipper service showed on Thursday. The outflows were the biggest since December 2013. Stock funds posted $1.7 billion in outflows over the latest week after attracting $3.7 billion in inflows the prior w