Unofficial exchange points pushed the greenback by 0.42% from Sunday to VND23,720.
Vietcombank kept the dollar unchanged at VND23,750.
Eximbank’s rate remained at VND23,740. Techcombank sold the dollar for VND23,757, down 0.01%.
The State Bank of Vietnam kept its reference rate at VND23,619.
The dollar has gained over the dong by 0.08% since the beginning of the year.
Globally the U.S. dollar index - which measures the currency against six major peers, including the yen and euro - was flat at 103.80, stabilising following last week's 0.7% slide, Reuters reported.
Japan's yen, which is particularly sensitive to long-term Treasury yields, rebounded from losses as steep as 0.6% to last be flat against the dollar as the U.S. 10-year yield fell sharply heading into the start of European trading, reversing an earlier 12 basis-point rise.
The Aussie, which at one point had been up by 0.7% to a nearly two-week top of $0.6743, was last 0.2% lower at $0.6683, sliding back below the closely watched $0.67 mark.