Vietcombank sold the greenback 0.01% higher at VND26,381.
On the black market the dollar dropped 0.44% to VND26,880.
Globally the dollar was calm as investors weighed a slew of data that showed the U.S. economy was in a delicate position ahead of a crucial jobs report on Friday, with rising geopolitical tensions keeping sentiment in check, Reuters reported.
The euro was steady at $1.1678 in early Asian hours, on course for a small weekly drop, while sterling bought $1.34605. The yen was flat at 156.78 per U.S. dollar as traders remained reluctant in placing major bets.
The Australian dollar fetched $0.6721, just below the 15-month high it touched earlier this week, while the New Zealand dollar was little changed at $0.5769.