Berkshire Hathaway, through its fully owned subsidiary National Indemnity Company, has increased its ownership in Japan's Mitsubishi Corporation and Mitsui & Co. The exact percentage increase for Mitsui was not disclosed, but the move reflects Berkshire's continued investment in these major Japanese trading firms. https://www.coherentmarketinsights.com/news/berkshire-increased-its-stake-in-japans-mitsubishi-above-10-1423