Sam RoSeptember 8, 2015US stock market futures are ripping higher after the three-day holiday weekend. Dow futures are up 300 points, S&P 500 futures are up 37 points, and Nasdaq futures are up 79 points. This makes up for all of what the markets lost on Friday. There isn't any obvious single headline to explain Tuesday's move. But here are a few big headlines that certainly showed up on some traders' radars: (snip)