Warren Buffett increased bets on the Japanese stock market. The latest earnings report released on Saturday shows that Berkshire Hathaway has increased its shares in Japan's five major trading companies, including Mitsubishi, Mitsui, Itochu, Sumitomo, and Marubeni, to about 9%. The firm spent 1.6 trillion yen (US$10.63 billion) on these stakes, totaling 2.9 trillion yen by the end of 2023, marking an 81% gain in yen and a 61% gain in d...