South Korea has opened its foreign exchange market to near round-the-clock trading, a move aimed less at changing the won’s value overnight than at making one of Asia’s major economies easier for global investors to trade.
The first session under the new system was calm. The Korean won held around 1,530 against the U.S. dollar, moving only slightly from the previous daytime close. That stability gave South Korea an early sign that its most significant currency-market reform in years could begin without the kind of volatility that often worries regulators when trading rules change.
The change allows won-dollar trading to continue from Monday morning through Saturday morning, instead of closing during large parts of the U.S. and European trading day. South Korea’s foreign exchange market had previously allowed won-dollar trading from 9 a.m. to 2 a.m. the following day. The new framework keeps the market open through the business hours of New York and London, with trading also available on most South Korean public holidays.
For international investors, the shift removes one of the practical frictions of trading Korean assets. South Korea is home to Samsung Electronics, the country’s largest technology company and a key global supplier of memory chips, as well as SK Hynix, another major memory-chip maker central to the artificial-intelligence hardware supply chain. Yet the won has long been less accessible than the currencies of many other advanced markets, partly because trading hours and market structure were still closely tied to South Korea’s domestic schedule.
That gap has mattered more as global investors pour money into Korean stocks, bonds and chip-related assets. When major U.S. inflation data, Federal Reserve signals or geopolitical shocks hit during New York trading hours, investors have often had to wait for South Korea’s domestic market hours or rely on offshore pricing. A longer trading window could help the won absorb global news more quickly and make pricing more transparent.
The move also fits South Korea’s broader effort to make its financial markets look more like those of a developed global market. The country has been trying to improve foreign investor access, modernize market infrastructure and raise the international use of the won. Those efforts are closely watched by global funds because South Korea remains one of the world’s most important industrial economies while still facing questions over market accessibility.
The quiet first day does not mean the reform will always be smooth. A 24-hour market can transmit global volatility faster. Sudden moves in the dollar, U.S. interest-rate expectations or risk appetite could now be reflected in the won in real time, rather than being delayed until the next domestic trading window.
For now, however, South Korea’s currency-market overhaul has started the way policymakers likely wanted. The won did not swing sharply. Trading continued without disruption. The larger question is whether the reform can bring deeper liquidity, broader foreign participation and a bigger global role for the Korean currency.
South Korea is not simply keeping its currency market open longer. It is trying to make the won trade more like a global currency in a market where capital moves continuously across time zones.
