U.S. stock mutual funds fell again, marking their first back-to-back weekly decline since May. Small-cap growth fell the most among diversified stock funds, slipping 2.39%, according to Lipper Inc. data. Large-cap value fell the least, giving up just 0.1%. The S&P 500, a measure of the broad stock market, and equity income funds have trumped all nonleveraged diversified in year-to-date performance, rising 6.78% and 6.79%, respectively.