Trader John O'Hara, left, greets penguins from SeaWorld as they walk the trading the trading floor of the New York Stock Exchange for the company's IPO, Friday, April 19, 2013, in New York. Penguin handler Lauren DuBois kneels, at right. The broad Standard & Poor's 500 index opened higher early Friday. (AP Photo/Richard Drew)

Associated Press
Trader John O'Hara, left, greets penguins from SeaWorld as they walk the trading the trading floor of the New York Stock Exchange for the company's IPO, Friday, April 19, 2013, in New York. Penguin handler Lauren DuBois kneels, at right. The broad Standard & Poor's 500 index opened higher early Friday. (AP Photo/Richard Drew)
Trader John O'Hara, left, greets penguins from SeaWorld as they walk the trading the trading floor of the New York Stock Exchange for the company's IPO, Friday, April 19, 2013, in New York. Penguin handler Lauren DuBois kneels, at right. The broad Standard & Poor's 500 index opened higher early Friday. (AP Photo/Richard Drew)
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