U.S. stock and world equity mutual funds fell for a second straight week, with world equity and large-cap value taking the brunt of the blows this time. The average U.S. stock fund fell 0.77% in the five-session period that ended Aug. 7, led lower by large-cap value funds’ 1.26% drop, according to Lipper data. Investors in U.S. equity funds have seen their year-to-date returns whittled down to 1.18%.