The won-dollar exchange rate against the U.S. dollar was 1,459 won at 9 a.m. on the 27th. That was down 7.6 won (0.51%) from the prior trading week's transaction closing price.
The drop in the exchange rate is seen as due to the U.S.-Iran tensions entering a lull. When a war situation ends, investor appetite for risk assets can expand over safe-haven dollars.
U.S. forces have held off on attacks on Iran since the 24th. Iran also decided to halt retaliation operations against U.S. allies. As a result, on the 24th (local time), September-delivery West Texas Intermediate (WTI) crude futures settled at $89.31 per barrel, down 3.12% from the prior transaction day.
Foreign investors were net buyers of 2.135 trillion won on the 24th. When foreigners sell dollars they hold to buy domestic stocks, the won can strengthen and the exchange rate can fall.
The U.S. Federal Reserve (Fed)'s benchmark rate decision, to be held on the 28th–29th Korea time, also appears likely to affect the exchange rate. The European Central Bank raised rates once in Jun., but decided to keep them on hold this month.