Stocks end a wobbly day mixed; S&P 500 posts a weekly loss

In this Nov. 5, 2020 file photo, a sign for Wall Street is carved in the side of a building, in New York. Stocks are opening broadly higher on Wall Street on Friday, May 21, 2021, bringing the S&P 500 out of the red for the week. (AP Photo/Mark Lennihan, File)

Wall Street racked up more losses Friday on a choppy day of trading that left the major indexes mixed and the S&P 500 with its second straight weekly decline.