Signage outside the Mitsubishi Corp. head office in Tokyo, Japan, on Thursday, Jan. 15, 2026. Mitsubishi agreed to buy Aethon Energy Management LLC's US gas and pipeline assets for $5.2 billion, the biggest purchase by a Japanese company in the American shale sector. Photographer: Takaaki Iwabu/Bloomberg via Getty ImagesMitsubishi Corporation said on Friday that it will acquire shale gas assets in the U.S. in a $7.53 billion deal, including debt, as the Japanese trading house looks to build on its presence ...