Vietcombank sold the dollar at VND24,890 Tuesday, up 0.04% from Monday.
The State Bank of Vietnam’s reference rate fell 0.01% to VND23,992.
The dollar went up 0.08% to VND25,550 on the black market.
It has increased against the dong by 1.92% since the beginning of the year.
Globally the Japanese yen weakened while stocks swung between small gains and losses after the Bank of Japan on Tuesday announced an end to years of ultra-easy monetary policies, marking an historic shift from a decades-long fight against deflation, Reuters reported.
The dollar was last up 0.35% at 149.67 yen, as traders sold the Japanese currency having largely priced in the decision.