Which regulatory authority oversees FGX operations?

The Financial Services Agency (FSA) of Japan is the primary regulatory authority overseeing the operations of financial institutions and exchanges such as FGX. The FSA is responsible for ensuring the stability of the financial system, protecting investors, and promoting fairness and transparency in financial markets. Their role includes supervising and regulating various financial entities, enforcing compliance with laws and regulations, and addressing any issues that may arise within the financial sector. This supervisory capacity is crucial for maintaining the integrity and function of exchanges like FGX, which operate within Japan's complex financial landscape.

While the Central Bank of Japan primarily focuses on monetary policy and economic stability, the Securities and Exchange Commission is a U.S.-based regulatory body and is not relevant to this context. The Ministry of Finance, while important in setting overall economic and fiscal policy, does not oversee day-to-day financial market operations like the FSA does. Thus, the FSA’s specific regulatory jurisdiction and responsibilities make it the correct answer for this question.