Earnings might be the focus on Friday. Major corporates such as Apple (AAPL) and Amazon (AMZN) have scheduled their quarterly results after the close of trading today.As of 8.15 am ET, the Dow futures were adding 124.00 points, the S&P 500 futures were adding 62.00 points and the Nasdaq 100 futures were progressing 383.00 points.The U.S. major averages finished lower on Thursday. The S&P 500 slumped 68.25 points or 1.0 percent to 6,822.34, while the narrower Dow posted a more modest loss, slipping 109.88 p ...