Berkshire Hathaway’s investments in Japanese trading houses reached a total value of approximately $40 billion. A landslide election win for Japan’s ruling coalition triggered the market rally that boosted the portfolio. The Nikkei 225 index surged nearly 4% during Monday’s trading session. These holdings now reflect a $26 billion gain over the initial $13.8 billion investment. Warren Buffett initiated these positions in 2019 across five major firms: Mitsubishi, Sumitomo, Marubeni, Itochu, and Mitsui.