South Korea officially launched 24-hour onshore dollar-won trading on Monday, opening a round-the-clock weekday FX market as Seoul tries to pull more global liquidity into the won.
The new system allows uninterrupted trading in the spot dollar-won market from 6 a.m. Monday in Seoul until 6 a.m. Saturday. The rollout follows a Seoul Foreign Exchange Market Committee decision to move KRW-USD trading to 24 uninterrupted hours a day from July 6, replacing the previous extended session that still left the won outside full global trading coverage.
The launch gives offshore investors a cleaner route into the Korean currency during U.S. and European market hours. It also narrows the gap between the onshore spot market and the offshore non-deliverable forward market, where global investors have long traded won exposure when Korea’s local FX market was closed.
Reuters’ launch update placed the start of the system at 6 a.m. Monday in Seoul, with trading running continuously through the weekday cycle. Finance Minister Koo Yun-cheol framed the rollout as the starting point for a wider global role for the won during a visit to Hana Bank’s foreign-exchange dealing room.
The FX overhaul sits inside South Korea’s longer push to make its markets easier for foreign investors to access. MSCI has kept Korea in emerging-market status for years, with currency convertibility and offshore access among the recurring issues in the country’s upgrade debate.
A 24-hour onshore market gives foreign funds more flexibility to hedge Korean equity and bond exposure without relying as heavily on offshore NDFs. That could reduce friction for global asset managers trading Korean stocks, bonds and FX across time zones.
The won has been under pressure this year, while Korean equities have moved through sharp swings tied to foreign flows, AI-chip exposure and broader risk appetite. South Korea recently triggered a KOSPI trading halt after an 8% opening crash, showing how quickly foreign positioning can hit local markets when global liquidity turns.
A deeper won market does not remove currency volatility. It changes where and when that volatility trades. More activity can improve price discovery and hedging, but it can also expose the won to sharper overnight moves when U.S. rates, dollar strength or global equity flows shift outside Seoul’s traditional trading day.
The launch also lands near South Korea’s widening digital-asset policy debate. Won-denominated crypto trading has already become one of the largest fiat channels in the world, with Korean platforms driving roughly 30% of global spot crypto volume earlier this year.
That scale makes currency access more important for crypto markets, even though the new system is an FX-market reform rather than a crypto rule change. A more accessible won gives banks, brokers and global investors a deeper settlement backdrop while Korea debates stablecoins, tokenized finance and exchange oversight.
The Bank of Korea has already pushed for a controlled rollout of won-linked stablecoins, favoring a banks-first stablecoin model because of foreign-exchange controls, AML risks and financial-stability concerns. A longer onshore FX trading window could strengthen the banking system’s role in won-based settlement while regulators decide how far non-bank digital-asset issuers can go.
For now, the policy line is clearer in traditional finance than in crypto. South Korea has opened 24-hour weekday dollar-won trading, the onshore market now runs from Monday morning to Saturday morning in Seoul, and the next test is whether deeper FX access pulls more offshore won activity back into Korea’s regulated market.
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