Daily Journal Corp, the publishing and technology company in which Warren Buffett's longtime business partner Charlie Munger is chairman, said it has nearly doubled its stake in Chinese e-commerce giant Alibaba Group Holding .The U.S. company raised its holding by 99.3% to 602,060 sponsored American Depository Shares as of Dec. 31, Daily Journal said in a regulatory filing on Tuesday, making the stake worth about $72 million as of Jan. 4.Munger, 98, has long been bullish on China. The vice chairman of Berkshire Hathaway (BRKa.N) had previously praised the country's crackdown on Jack Ma's Ant Group