Warren Buffett's Berkshire Hathaway raised its stake in Japan's top five trading firms to about 9%, as revealed in its annual report. The company had previously held 7-8% stakes in Mitsubishi, Itochu, Mitsui & Co., Sumitomo, and Marubeni. Berkshire aims for long-term holdings, initially announced in 2020, with plans to increase to 9.9%. In February 2024, Berkshire reported paying ¥1.6 trillion ($10.63 billion) for the stakes, valued at ¥2.9 trillion by 2023-end, translating to unrealized gains of 61% or $8 billion.