The U.S. dollar fell against the Vietnamese dong Thursday morning, lowest since July 31.

Vietcombank lowered its rate by 0.01% to VND26,386. The State Bank of Vietnam's reference rate fell 0.01% to VND25,130.

The greenback jumped 1.18% to VND26,930 on the black market.

Globally the dollar held steady on Thursday, on track for its best week in nearly a year, buoyed by a weak yen that has struggled on the back of a change of guard in Japan's ruling party, Reuters reported.

The Japanese currency was last a touch stronger at 152.49 per dollar, after having slid to an eight-month low of 153 per dollar overnight. It has fallen more than 3% for the week thus far, set for its worst performance since September 2024.

"The increase in dollar/yen has been quite relentless, and it seems like nothing can stop it from rallying," said Carol Kong, a currency strategist at Commonwealth Bank of Australia.