Late rally not enough to save Wall Street from a fourth straight week of losing, the worst streak since an obscure Japanese trade sparked a global market meltdown

U.S. stocks are bouncing back Friday, but not by enough to keep Wall Street from heading toward a fourth straight losing week, which would be its longest such streak since August. The S&P 500 was 1% higher in morning trading, a day after closing more than 10% below its record for its first “…