MUFG, a part of Mitsubishi, is Japan's largest bank with around $1.5 trillion in assets. So, yes, absolutely.

https://en.wikipedia.org/wiki/MUFG

Probably yes, the Mitsubishi conglomerate is about 150 years old and it's spread across many industries, they where especially influential during the world wars (look up for 'zaibatsu'), so one can suppose that they are very indluential.