Stocks dropped today as investors grew jittery over earnings season, the Wall Street Journal reports. Major industrial and commodities stocks saw declines ahead of Alcoa’s report, in which analysts expect a loss of 56 cents per share. Tech fell, too, with Research in Motion and Cisco dropping 6% and 4%, respectively. The Dow lost 186.29 to close at 7,789.56. The Nasdaq fell 45.10, settling at 1,561.61, while the S&P 500 dropped 19.93 to close at 815.55.