Woori Bank recorded South Korea’s highest extended-hours share in spot foreign-exchange trading at 51% during the July 2025-to-June 2026 period, according to the Seoul Foreign Exchange Market Committee’s 2026 FX Market League Table. NH NongHyup Bank led total FX trading, which combines spot transactions and FX swaps, with a 43% extended-hours share. The committee reviewed 98 institutions and published the top seven in spot FX, FX swaps and total trading, but did not disclose institution-level trading rankings. Foreign banks featured more prominently in FX swaps and total trading, while Meritz Securities remained the leading non-bank institution across all three categories for a second consecutive year.