U.S., Asia Stocks Plunge as Debt Concern Spurs Electronic Rout

http://www.bloomberg.com/apps/news?pid=20601087&sid=aOlCsh0xeWvk

May 6 (Bloomberg) -- U.S. stocks tumbled the most in a year as waves of computerized trading exacerbated a selloff triggered by Europe’s debt crisis, sparking a slide in Asian shares. The rout briefly erased more than $1 trillion in U.S. market value as the Dow Jones Industrial Average fell almost 1,000 points, a 9.2 percent plunge that was its biggest intraday percentage loss since 1987 and largest point drop ever, before paring the drop.