US STOCKS-Wall St ends lower; S&P 500 in biggest 3-day drop since Jan
* Internet stocks tumble
* Utilities, consumer staples in positive territory
* Indexes down: Dow 1 pct; S&P 1.1 pct; Nasdaq 1.2 pct (Updates to close)
By Angela Moon
NEW YORK, April 7 (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.
But the biotechnology sector, which saw sharp declines in the past several sessions, ended higher with the Nasdaq biotech sector index up 0.5 percent at 2,367.94.
Selling pressure migrated to other sectors, with only defensives such as utilities and consumer staples in positive territory among the 10 major S&P sectors. Continuación...