Bank of Korea and FSS Launch Joint Probe into Major Foreign Exchange Banks

The Bank of Korea and the Financial Supervisory Service are conducting a joint inspection of major foreign exchange banks to identify trading activities that cause market instability. This regulatory action targets the financial sector’s role in the recent surge of the dollar-to-won exchange rate, according to a June 14, 2026, report from Apple Economy.

Why are South Korean regulators inspecting foreign exchange banks?

Regulators are seeking to determine if specific trading behaviors by financial institutions have exacerbated the volatility of the Korean won against the U.S. dollar. The joint effort between the Bank of Korea (BOK) and the Financial Supervisory Service (FSS) aims to curb speculative activities that fuel rapid exchange rate spikes, according to Apple Economy.

The BOK and FSS are focusing on whether major banks engaged in transactions that contributed to abnormal market movements. The headline from Apple Economy characterizes this as a strong action against the financial sector to stabilize the currency market.

How will the joint inspection function?

The inspection involves a coordinated review of trading logs and transaction patterns at the nation’s primary foreign exchange banks. By combining the BOK’s monetary policy oversight with the FSS’s supervisory authority, the agencies can track the flow of capital and identify specific trades that may have destabilized the won.

This collaborative approach allows regulators to see both the macro-economic impact on currency reserves and the micro-level compliance of individual banking institutions. The goal is to identify and penalize activities that deviate from standard market-making practices.

What is the regulatory context for the won-dollar exchange rate?

South Korea frequently employs joint inspections when currency volatility threatens economic stability. The BOK manages the won’s value to prevent extreme fluctuations that could impact import costs and inflation. When the dollar surges rapidly, the BOK often intervenes through “smoothing operations” to reduce volatility.

The current crackdown follows a pattern of regulatory scrutiny often tracked by global financial data providers like Bloomberg, where sudden shifts in the KRW/USD pair trigger alerts for emerging market instability. By targeting the financial sector, the BOK and FSS are signaling that they will not tolerate speculative trading that undermines national monetary goals.

Banks found to have contributed to the instability may face administrative sanctions or fines. The BOK and FSS have not yet released a specific timeline for the conclusion of the probe or the exact number of banks under review.