U.S. markets gained this Thursday after Chinese reserve bank unexpectedly decreased its deposit and interest rates by 25 basis points. The Dow Jones Industrial Average rallied 72 points to 12,491. The Standard & Poor 500 Index advanced 10.50 points to 1,319.40 and Nasdaq-100 index climbed 16.50 points to 2,566.50. Petroleum futures ticked higher, while gold and the Greenback retreated.