Mitsubishi Heavy Industries is trading at ¥2,735.50, a change of -10.37%, amid defense-sector selling. - Election-related concerns about U.S. defense spending have weighed on defense shares, with the supplied context describing a broad sector sell-off. - On November 6, the company reported first-half FY2026 results and revised its full-year earnings forecast. - Available reporting does not establish either announcement as the direct cause; no clear company-specific catalyst was verified.