The Dow Jones Industrial Average DJIA, +0.30 percent is selling off in unison, with all 30 components losing ground in premarket activity. Boeing Co. BA, -1.85%, lost 2.6 percent; Salesforce.com Inc. CRM, -0.72%, lost 2.3 percent; and J.P. Morgan Chase & Co. JPM, +0.12%, lost 2.2 percent. The best-performing stock was Verizon Communications Inc.’s shares VZ, +0.22 percent, which fell only 0.6 percent. Dow futures fell 485 points, or 1.4 percent, on fears about the economy’s prospects./nRead More