Dow Jones Industrial Average Drops As Apple Inc (AAPL) Sinks 3%

U.S. stocks sank lower in afternoon trading Tuesday as shares of Apple Inc. (NASDAQ:AAPL), the world's most valuable company, dropped to a six-month low. Five out of the 10 Standard and Poor's 500 sectors traded lower, led by a more than 1 percent decline in utilities, while materials was the biggest gainer, up nearly 1 percent.