U.S. stock futures rose Thursday, boosted by strong third-quarter earnings from Caterpillar Inc.(CAT) and other companies. Dow Jones Industrial Average futures rallied 135 points, or 0.8%, to 16559. S&P 500 futures gained 15 points, or 0.8%, to 1940 and Nasdaq-100 futures added 32 points, or 0.8%, to 3981. Changes in stock futures don't always accurately predict stock moves after the opening bell.