A trader works on the main trading floor of the New York Stock Exchange (NYSE) shortly after the opening bell in New York, May 20, 2013. U.S. stocks were set to dip at the open on Monday as investors search for catalysts after major U.S. equity indexes closed a fourth consecutive week of gains Friday.
Corey Prinz, center, and Mary Harris, right, of Bank United, applaud the closing bell at the NYSE Tuesday after the day ended at more than 15,000 for the first time, Tuesday, May 7, 2013.
SeaWorld Entertainment CEO Jim Atchison, center, is congratulated by NYSE Senior Vice President David Ethridge, right, as his company's IPO begins trading on the floor of the New York Stock Exchange, Friday, April 19, 2013, in New York. The broad Standard & Poor's 500 index opened higher early Friday.
Goldman Sachs floor governor Henry Becker Jr. (C) and NYSE floor manager Rudy Mass (centre, R) determine bids for Grainger at the post that trades it on floor at the New York Stock Exchange, April 16, 2013.
Sheryl Palmer, President and CEO of Taylor Morrison, meets with David Ethridge, left, NYSE senior vice president and head of the capital markets group, and specialist Edward Zelles, as she waits for her company's IPO to begin trading, on the floor of the New York Stock Exchange, Wednesday, April 10, 2013. Stocks are opening higher on Wall Street, a day after the Dow Jones industrial average closed at its second all-time high in a week.
Jersey City Mayor Jerramiah Healy, left, accompanied by NYSE CEO Duncan Niederauer, gavels closed trading after he rang the closing bell of the New York Stock Exchange, Wednesday, March 20, 2013. Stocks closed higher on Wall Street after the Federal Reserve stood by its plan to continue with aggressive measures to boost the economy.
