A couple of important thing to note about the Japanese taxation system for stock capital gains: (1) Japan has no concept of short term vs long term capital gain

A couple of important thing to note about the Japanese taxation system for stock capital gains: (1) Japan has no concept of short term vs long term capital gains for stocks. The tax rate is a flat 20% no matter how long you have held the security, and (2) from about 2003-2014, said rate was only 10%. These two factors make personal trading in Japan a potentially much more lucrative affair than in the United States [1]. >Another day trader, Takashi Kotegawa, who’s known as BNF, made more than 2 billion yen, according to a Bloomberg News report at the time. Efforts to reach Kotegawa were unsuccessful, and it isn’t clear whether he still trades. IIRC "BNF" now owns a prominent building in Akihabara (he likely still trades). I forgot the details of the reasoning, but I remember reading something about the purchase about 5 years ago on 2chan. [1] https://en.wikipedia.org/wiki/Capital_gains_tax#Japan https://en.wikipedia.org/wiki/Capital_gains_tax#Japan