September Nasdaq 100 E-Mini futures (NQU24) are trending down -0.21% this morning as an underwhelming sales forecast from chipmaker Micron weighed on sentiment, while investors awaited a flurry of U.S. economic data, a presidential debate, and an earnings report from the world’s largest shoemaker Nike. Micron Technology (MU) slumped over -6% in pre-market trading after the memory chipmaker provided Q4 sales guidance that trailed the estimates of some investors, overshadowing its stronger-than-expected Q3 results. In yesterday’s trading session, Wall Street’s main stock indexes closed in the gr…