US STOCKS-Wall St drops on Russia worry as techs, materials drag
* Facebook to buy Oculus for $2 billion; shares fall nearly 7 pct
* King Digital plunges in trading debut
* U.S., EU to work together on tougher Russia sanctions
* Dow off 0.6 pct; S&P 500 off 0.7 pct; Nasdaq off 1.4 pct (Updates with declines in S&P energy index, Newmont Mining and Dow Chemical shares)
By Angela Moon
NEW YORK, March 26 (Reuters) - U.S. stocks fell on Wednesday, led by losses in the technology and materials sectors, as geopolitical concerns rose after the United States and the European Union agreed to work together on tougher sanctions on Russia.
Trading remained choppy with U.S. stocks mostly positive in the morning after U.S. economic data pointed to improving conditions. But the major indexes reversed course in the afternoon as technology stocks turned sharply lower.
Among technology stocks, Facebook was one of the biggest decliners a day after the social networking company said it would acquire two-year-old Oculus VR Inc, a maker of virtual-reality glasses for gaming, for $2 billion. Facebook shares ended down 6.9 percent at $60.39.
The United States and the European Union agreed to work together to prepare possible tougher economic sanctions in response to Russia's behavior in Ukraine. The sanctions could possibly include the energy sector. Continuación...