The yen advanced past the key psychological level of ?140 against the dollar as the Japanese currency extended its rally from the weakest point in nearly 38 years in July.

It appreciated as much as 0.6% versus the dollar to ?139.96 on Monday, its strongest level since July 2023.

The yen has been the best-performing Group-of-10 currency this quarter, with a 15% gain as investors position for a further narrowing of the interest-rate gap between the U.S. and Japan.