Nissan Motor shares surged over  20 on Wednesday following a Nikkei report about a potential merger with Honda Motor. The report suggests the automakers plan to operate under a holding company, with Mitsubishi Motors also potentially joining. While Honda shares slipped 3, Mitsubishi closed over 19 higher. Nissan denied confirming any integration plans but acknowledged exploring collaborations. Combined sales of the three companies could exceed 8 million vehicles annually, placing them among the world's largest automakers but still trailing Toyota and Volkswagen.