In his speech, Fed chairman Yellen a full defence of the Fed's extreme easing policy

U.S. stocks climbed strongly in Monday, and Fed chairman Yellen a full defence of the Fed's extreme easing policy, citing the main reason why the U.S. economy remains weak. Investors expect China and Europe to unveil new stimulus measures. In Monday, the majority of stocks rose, the Chinese star Microelectronics rose 21.81%.

As of close, the Dow Jones index closed at 16458.63 points, rising 135.37 points, or 0.83%. The S & P 500 index closed at 1872.37 points, up 14.75 points, or 0.79%. The Nasdaq index reported 4198.42 points, up 42.66 points, or 1.03%.

In Monday close most of the stock rose, 5 stocks rose more than 6%, the star microelectronics up 21.81%, China's hand swim up 8.18%, only the goods will rise 8.19%, Century interconnection rose 7.17%, state digital rose 6.14%;3 shares fell more than 2%, the United States media decline 2.46%, the Nineth city fell 2.34 %, school education fell 2%.