JAPAN: Worries about Japan's stricken nuclear reactors eased after the Nuclear Regulatory Commission said the situation at the Fukushima Dai-ichi plant appeared to be stabilizing.
PHONE DEAL: AT&T Inc. said it would buy rival T-Mobile USA for $39 billion, creating the largest U.S. cellphone company. The deal raised hopes that more corporate buyouts could be on the way as businesses become more confident in the economic recovery.
THE INDEXES: The Dow Jones industrial average rose 178.01 points, or 1.5 percent, to 12,036.53. The S&P 500 gained 19.18 to 1,298.38. The Nasdaq composite rose 48.42 to 2,692.09.