Officials in China, whose stock market woes have riled world markets, stepped up after the close of the market to cut interest rates and allow banks to lend more.
Markets in Europe and U.S. stock futures were already higher before China’s move, and the stimulus added to the rebound from one of the worst trading days in years on Monday.
U.S. stock futures were up more than 4% and markets in Germany and the U.K. climbed.