US STOCKS-Wall St trips as Amazon tumbles; indexes slip for week
* Amazon shares fall after results; Visa, Ford also down
* Microsoft edges higher as earnings beat expectations
* Investors concerned about fallout from Ukraine violence
* Dow off 0.9 pct; S&P 500 down 0.8 pct; Nasdaq off 1.8 pct (Updates volume)
By Chuck Mikolajczak
NEW YORK, April 25 (Reuters) - U.S. stocks dropped on Friday, pulled lower by a selloff in consumer discretionary stocks as bellwether names Amazon.com and Ford Motor fell in the wake of their quarterly earnings.
Amazon was the S&P 500's worst performer, down 9.9 percent to $303.83, and other high-flying sectors dropped along with it. Social media names slid, with Twitter losing 7.1 percent to $41.61, and the Nasdaq Biotechnology Index falling 2.4 percent as investors once again shied away from riskier sectors. The Global X Social Media index ETF tumbled 5.3 percent, its second-worst performance since its debut in November 2011.
Still, even with Friday's decline, the S&P 500 finished nearly flat for the week. The benchmark index remained within 2 percent of its all-time intraday high.
Amazon's stock declined a day after the company reported a jump in quarterly revenue, which was offset by sharp increases in spending. Continuación...