The State Bank of Vietnam (SBV) set the central exchange rate at VND 25,249 per US$1 Friday, up 9 dong from the previous day.
Meanwhile, the Google Finance mid-market rate edged up 5 dong to VND 26,270 per US$1.
On the black market, the dollar held steady at VND 26,450 for buying and VND 26,505 for selling, with the mid-market rate at VND 26,478.
The gap between the black market and Google mid-market rates narrowed to 208 dong, or 0.79 percent.
Money market
Seven-day repos increased to US$334.89 million from US$190.37 million.
Fourteen-day repos rose to US$152.34 million from zero, while 28-day repos climbed to US$210.03 million from zero.
A 91-day repo of US$1.58 million the previous day was not rolled over. Treasury bill balances remained at zero.
Interbank rates
Short-term interbank rates fell sharply, with the overnight rate dropping to 3.88 percent from 5.02 percent, and the one-week rate declining to 4.11 percent from 5.26 percent.
The two-week rate eased to 4.89 percent from 5.30 percent, while the one-month rate inched up to 4.89 percent.
Three-month rates fell to 5.55 percent from 5.63 percent, while the six-month rate was unchanged at 5.80 percent.
See also: Right Now, a Weak Dong Could be Good for Vietnam. Here’s Why.