According to Reuters, U.S. stocks looked set to snap a four-day rally on Thursday as disappointing holiday-season results from Macy’s hammered retail stocks and no clear signs of a resolution emerged from U.S.-Chinese trade talks. Despite the S&P 500's .SPX 0.60 percent retreat, the benchmark index is holding near three-week highs and is 9.2 percent above the 20-month low it hit around Christmas, thanks to the recent rally that was driven by strong U.S.