Traders work on the floor of the New York Stock Exchange on March 6, 2013. U.S. stocks surged on Tuesday, with the Dow Jones Industrial Average setting all-time closing high and intra-day high, as investors became more confident in the stock market. (Xinhua/Wang Lei)

Guests cheer after ringing the closing bell at the New York Stock Exchange on March 6, 2013. U.S. stocks surged on Tuesday, with the Dow Jones Industrial Average setting all-time closing high and intra-day high, as investors became more confident in the stock market. (Xinhua/Wang Lei)

Traders work on the floor of the New York Stock Exchange on March 6, 2013. U.S. stocks surged on Tuesday, with the Dow Jones Industrial Average setting all-time closing high and intra-day high, as investors became more confident in the stock market. (Xinhua/Wang Lei)

Traders and guests cheer after ringing the closing bell at the New York Stock Exchange on March 6, 2013. U.S. stocks surged on Tuesday, with the Dow Jones Industrial Average setting all-time closing high and intra-day high, as investors became more confident in the stock market. (Xinhua/Wang Lei)

Traders work on the floor of the New York Stock Exchange on March 6, 2013. U.S. stocks surged on Tuesday, with the Dow Jones Industrial Average setting all-time closing high and intra-day high, as investors became more confident in the stock market. (Xinhua/Wang Lei)

Tourists gather in front of the screens at the New York's Time Square in New York, the United States on March 5, 2013. The U.S. Dow Jones Industrial Index broke its all-time record Tuesday. (Xinhua/Wang Lei)

People walk past the NASDAQ stock exchange in New York, the United States on March 5, 2013. The U.S. Dow Jones Industrial Index broke its all-time record Tuesday. (Xinhua/Wang Lei)

Tourists gather in front of the screens which shows the record-breaking Dow Jones Industrial Index at the New York's Time Square in New York, the United States on March 5, 2013. The U.S. Dow Jones Industrial Index broke its all-time record Tuesday. (Xinhua/Wang Lei)

A staff works inside the NASDAQ stock exchange in New York, the United States on March 5, 2013. The U.S. Dow Jones Industrial Index broke its all-time record Tuesday. (Xinhua/Wang Lei)

Tourists gather in front of the screens at the New York's Time Square in New York, the United States on March 5, 2013. The U.S. Dow Jones Industrial Index broke its all-time record Tuesday. (Xinhua/Wang Lei)