Vietcombank sold the dollar at VND24,260, up 0.08% from Monday.
The State Bank of Vietnam (SBV)’s reference rate was at VND23,959, down 0.08%.
The dollar was stable at VND24,200 on the black market.
It has gained over the dong by 2.23% since the beginning of the year.
Globally the dollar was broadly steady on Wednesday ahead of a key U.S. inflation report later in the day, though it rose on the yen as traders assessed comments from Japan’s top central banker on a possible early exit from its negative interest rate policy, Reuters reported.
The U.S. currency advanced around 0.2% to 147.36 against the yen, which retraced its biggest one-day percentage rise in two months on Monday, following the remarks from Bank of Japan (BOJ) Governor Kazuo Ueda over the weekend.
Sterling slipped 0.01% to $1.2482, while the Australian dollar fell 0.04% to $0.64015.
The U.S. dollar index measure against a basket of key rivals was last steady at 104.67, after slipping to a one-week low on Monday and clocking its largest daily fall in two months.