Mutual funds focused on the U.S. stock market slipped in the week ended June 12, ending a three-week string of gains, according to Lipper Inc data. But world equity funds continued to advance for a ninth straight week and lifted their year-to-date gain to 4.27% vs. U.S. diversified stock funds’ 2.90%. Small caps went against the grain, posting gains. Value funds remained the year-to-date leaders over growth.