The greenback was sold at VND25,620 at unofficial exchange points, down 0.70% from Friday. Vietcombank kept the dollar steady at VND25,470.
The State Bank of Vietnam let its reference rate slide by 0.02% to VND24,278.
The dollar has gained 4.8% against the dong since the beginning of the year.
Globally the dollar rose on Friday and was heading for a weekly gain as investors evaluated the likely impact on the American economy of Tuesday’s election of Republican Donald Trump as U.S. president, Reuters reported.
The dollar index jumped to a four-month high of 105.44 on Wednesday, but has dipped since, partly due to profit-taking. It was up 0.58% on the day at 105.01 on Friday and on pace for a 0.68% weekly increase.