Wall Street suffers worst drop since June after weak data

Traders work on the floor of the New York Stock ExchangeBy Chuck Mikolajczak NEW YORK (Reuters) – U.S. stocks slumped on Monday, with the S&P 500 suffering its worst drop since June, after weaker-than-expected data on the factory sector in the world's largest economy provided investors with the latest reason to move away from riskier assets. "Nothing is preserved today – once the market started selling off, that was that," said Keith Bliss, senior vice-president at Cuttone & Co in New York.