U.S. stocks closed lower on Friday in a broad consumer discretionary-led selloff after Visa and Amazon, a pair of closely watched bellwether names, reported disappointing results. While the S&P 500 found support at its 14-day moving average, suggesting a recent positive trend in equities remains intact, the day’s decline was enough to erase the benchmark index’s gain for the week. Amazon.com Inc tumbled 9.6 percent to $324.01 as the biggest drag on the S&P 500 after reporting an unexpectedly big second-quarter loss due to greater expenses on investments.