Middle-aged men in Tokyo are driving a $67 trillion trading boom in Japan by using trading apps to profit from short-term swings in the yen. This surge in FX trading is attributed to the accessibility and convenience provided by trading apps, allowing individuals to easily participate in the market. These middle-aged men, often referred to as salarymen, are taking advantage of the volatility in the yen to make profits. The availability of real-time market data and the ability to execute trades instantly on these apps have made it easier for them to engage in FX trading. This trend highlights the increasing role of technology in the financial markets and the democratization of trading. [d367afea]