UPDATE 1-Investors pump $10 bln into U.S. stock funds in weekly period -Lipper
(Adds data on mutual funds and ETFs) By Trevor Hunnicutt NEW YORK, Dec 31 (Reuters) - Investors pumped $10 billion into U.S.-based stock funds in the week that ended Dec. 30, Lipper data showed on Thursday, demonstrating a willingness to take on risk at the end of a year that has delivered slim gains to financial markets. Funds tracking foreign stocks took in money from both mutual fund and exchange-traded fund investors during the week - $9.3 billion in all, Lipper said - one wee
