Berkshire Hathaway has increased its stake in Japan's major trading houses, raising its holdings in Mitsubishi, Mitsui, Itochu, Marubeni, and Sumitomo to nearly 10%. This decision has positively impacted the Tokyo stock market, with the Nikkei 225 index closing up 448 points at 37,845.42 on March 18, 2025. The rise in stock prices is attributed to both the weaker yen and investor confidence stemming from Buffett's investment strategy. Following this news, the Nikkei index continued to show strength, closing at 38,107.27 on March 19, 2025, before settling at 37,751.00 later that day. Berkshire Hathaway's stock also reached new all-time highs amid broader market volatility, with its Class A shares trading at record levels.