Japanese companies' M&A activity involved 2,647 deals in the first half of 2026, up 5.1% year-over-year. While Japanese companies' acquisitions of overseas firms declined, foreign funds' investment in Japanese companies surged approximately 30%, driven by historic yen weakness making Japanese assets more attractive. Major deals include Nippon Sheet Glass receiving 165 billion yen investment from U.S. Apollo Global Management and Tokyo Marine Holdings obtaining 287.4 billion yen from Warren Buffett's Berkshire Hathaway. Activist investors' proposals increased significantly at June shareholder meetings, raising their profile and prompting government and business sector calls for regulatory measures.