US stocks tumbled, led by banks and computer companies, after the biggest decline in manufacturing in five years sent the Dow Jones Industrial Average to its worst start since 1983.

Intel Corp., the largest semiconductor maker, fell the most in almost a year after Bank of America Corp. lowered its rating and investors speculated companies will spend less on technology. Caterpillar Inc., the largest maker of earthmoving equipment, and International Business Machines Corp., the biggest computer services company, led the Dow Jones Industrial Average to a 1.7 percent plunge.

The Standard & Poor’s 500 Index lost 21.20, or 1.4 percent, to 1,447.16, the most to start a year since it fell 2.8 percent on Jan. 2, 2001. The Dow average slipped 220.86 points to 13,043.96. The Nasdaq Composite Index decreased 42.65, or 1.6 percent, to 2,609.63. More than three stocks fell for every one that rose on the New York Stock Exchange. [MORE]