There were no major U.S. economic reports Wednesday, although data on Chinese exports and German industrial output were "encouraging," said Peter Cardillo, chief market economist at Rockwell Global Capital.
But there were a lot of earnings. Whole Foods(WFM) shares surged after the supermarket chain reported quarterly earnings that beat estimates.
Electronic Arts(EA) said it expects earnings in fiscal 2014 to be above what analysts had expected. Shares jumped 15%.
After the market closed, Green Mountain Coffee Roasters (GMCR)reported earnings that beat analysts' expectations and announced plans to extend its partnership with Starbucks(SBUX). Green Mountain surged 13% in extended trading.
Electric car maker Tesla(TSLA) reported a quarterly profit and sales that exceeded forecasts. Shares popped more than 10% in after-hours trading.
Groupon(GRPN) reported another quarterly loss, although the daily deals website said revenue growth accelerated. Shares soared after hours.
News Corp(NWS) said sales rose in the first quarter and reported earnings that met analysts' expectations.
Monster Beverage(MNST) reported earnings that were below analysts' expectations, despite a rise in sales. The company, which has been criticized for marketing highly caffeinated drinks to children, blamed the drop in earnings on legal costs and other short-term factors.