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• NYSE Euronext, owner of the New York Stock Exchange, lost 5 percent after reporting that its income plunged in the first three months of the year. Revenues from its trading business were weak and the company had to abandon a merger with the European exchange operator Deutsche Boerse.

• Sunoco jumped 20 percent, the most of any stock in the S&P 500. The fuel-refining company agreed to be bought by Energy Transfer Partners, an operator of natural gas pipelines, for $5.3 billion.