Stocks closed lower on Friday as inflation data coupled with comments from Fed Chair Janet Yellen continued to indicate higher U.S. rates this fall. Led by losses in component stocks Boeing ( BA ) and Microsoft ( MSFT ) the Dow Jones Industrial Average underperformed the other benchmarks and closed the week lower by just 40 points. Mostly upbeat corporate earnings from John Deere ( DE ) and Hewlett Packard ( HPQ ) also contributed to the firmer tone before equities surrendered their minimal gains after the CPI data.