South Korea’s import prices rose by 20.2% year on year in April. This was up from 18.4% in the previous period.
With South Korea’s import prices climbing 20.2% year-over-year, we see significant pressure building on the Korean Won. This acceleration in costs is already pushing the USD/KRW exchange rate, which we’ve seen test the 1380 level in recent trading sessions. Traders should anticipate further KRW weakness and may consider positioning through options, such as buying USD calls or KRW puts.
This inflationary shock puts the Bank of Korea in a difficult position, as its 2% inflation target is now under serious threat. With the policy rate currently holding at 3.5%, the market is now pricing in a higher probability of a rate hike in the next quarter to defend the currency and curb inflation. We should monitor interest rate swap markets for signs of growing hawkish sentiment.
For the equity markets, these rising input costs will squeeze the profit margins of major Korean manufacturers. Companies in the KOSPI 200 index, which has already shed 4% over the last month, are particularly vulnerable to this trend. Protective puts on the index or on specific import-heavy industrial stocks could be a prudent strategy against a potential earnings-driven downturn.
From our perspective in 2025, we remember the sharp depreciation the Won experienced back in 2022 when similar global inflationary pressures mounted. The currency weakened past 1400 against the dollar during that period, establishing a clear historical precedent for the kind of volatility we might see again. This history suggests the current move may have much further to run if cost pressures are not contained soon.
Given the uncertainty around the timing and magnitude of the Bank of Korea’s response, we expect implied volatility on the USD/KRW pair to rise. A simple strategy for the coming weeks could be to go long volatility, using instruments like straddles. This allows traders to profit from a large move in the exchange rate, regardless of the direction.
