The most-traded April copper contract on the Shanghai Futures Exchange gained 1.9 percent to 60,560 yuan ($9,600) a tonne on Thursday. China's exchanges will be closed next week for the Lunar New Year holidays. "The positive sentiments are back in the market," said Ker Chung Yang, an investment analyst at Phillip Futures in Singapore. "The IMF is going to raise funds to tackle the debt crisis, US economic data looked good and LME copper inventories are dropping, so prices are on a bullish note."