S&P flash composite Purchasing Managers’ Index (PMI) due at 9:45 a.m. ET. PMI will follow weak readings from Europe earlier in the day that compounded expectations of a recession in the region and pressured global markets. High-growth stocks such as Apple Inc (AAPL.O) and Amazon.com Inc (AMZN.com) added 0.3% each in trading before the bell, while most banks also edged higher. U.S. Treasury yields retreated a little on Tuesday, a day after scaling past 3% for the first time since July 21, supporting battered megacap growth and technology stocks. The summer rally snapped last week on renewed fears around an aggressive monetary policy tightening path . . .