The market had been up for much of the day after the government reported that retail sales rose in September for the fifth straight month.
That report appeared to overshadow new data showed U.S. industrial production had its weakest showing last month since the spring.
Despite the marketโs downbeat finish, the major stock indexes have already recouped most of their losses from September's market swoon.
Across the S&P 500, analysts are expecting companies to report another drop in profits for the summer from year-ago levels.
Several big companies report quarterly results next week, including Netflix, Coca-Cola, Tesla, Southwest Airlines and American Express.