Wall Street ends lower; S&P 500 in biggest three-day drop since January

Traders work on the floor of the New York Stock ExchangeBy Angela Moon NEW YORK (Reuters) – U.S. stocks fell on Monday with the S&P 500 posting its biggest three-day drop in two months, as investors bid down Internet stocks and rotated into defensive names to protect against further declines. Internet stocks were among the day's biggest decliners with Amazon.com down 1.6 percent at $317.76 and Yahoo! Inc off 3.5 percent at $33.07. The Global X Social Media ETF which includes Groupon Inc and LinkedIn fell 2.5 percent. The Nasdaq index posted its worst three-day decline since November 2011. …