The won-dollar exchange rate against the U.S. dollar opened at 1,443 won on the 23rd. That was down 3.6 won from the previous transaction day.
The decline in the won-dollar exchange rate on this day appears to be due to the KOSPI index surpassing 5,900 points for the first time ever. Min Kyung-won, a researcher at Woori Bank, said, "As the stock market's (rising) rally extends, the inflow of foreign funds increases the likelihood of a decline in the (won-dollar exchange rate)."
The KOSPI index topped 5,900 p as soon as the market opened. Thanks to a 2%–3% rise in Samsung Electronics and SK hynix shares. As of 9:14 a.m. on this day, the KOSPI index was 5,901.52 p, up 1.6% from the previous transaction day.
Meanwhile, the renewed rise in uncertainty over U.S. tariff policy could act as a factor pushing the won-dollar exchange rate higher, as it dampens investor sentiment toward risk assets. On the 20th (local time), the U.S. Supreme Court ruled that President Donald Trump's reciprocal tariffs were illegal. In response, President Trump has released that he will introduce a 15% global tariff.