(Reuters) - U.S.-based stock funds in the week ended Wednesday posted $3.3 billion outflows, according to Lipper. U.S. taxable bond funds attracted $8.2 billion, the 11th straight weekly inflow and money market funds drew $23.6 billion, the largest inflow since May, Lipper data published late Thursday showed. U.S. municipal bond funds shed $605 million, the first outflow since November.