The Dow Jones Industrial Average climbed, extending its winning streak to seven sessions, as investors assessed the chances of fresh federal stimulus spending and the slowing pace of new coronavirus infections. The blue-chip index climbed 357.96 points, or 1.3%, to 27791.44, buoyed by shares of Boeing and Caterpillar. The S&P 500 added 9.19 points, or 0.3%, to 3360.47, and is within 1% of its February record. The...