Some of the most actively traded stocks include Plug Power ( PLUG ) up 14%, General Electric ( GE ) down 1.8%, Facebook ( FB ) up 2%, and Bank of America ( BAC ) down 0.25%. In overseas trading, Japan's Nikkei 225 Stock Average was lower by 1.01%, and the Hang Seng was down 0.29%. In economic news, CPI and Existing Home Sales are released tomorrow, Initial Claims on Thursday and Durable Goods on Friday.