The State Bank of Vietnam (SBV) set the daily reference exchange rate at 23,154 VND per USD on October 18, down 5 VND from the previous day (October 17).
With the current trading band of +/- 3 percent, the ceiling rate applied to commercial banks during the day is 23,848 VND per USD and the floor rate at 22,459 VND/USD.
The opening hour rates at some commercial banks fluctuated variably.
At 8:15 am, Vietcombank listed the buying rate at 23,115 VND/USD, and the selling rate at 23,265 VND/USD, both up 5 VND from the same time on October 17.
Meanwhile, BIDV kept both rates unchanged, with the buying rate listed at 23,145 VND/USD and the selling rate at 23,265 VND/USD.
On the contrary, Techcombank reduced both rates by 4 VND, listing the buying rate at 23,135 VND/USD and the selling rate at 23,275 VND/USD.
During the week from October 14 to 18, the daily reference exchange rate was adjusted down on the first day and unchanged on Tuesday before going up on the next two days. The trend reversed again on Friday, resulting in the rate ending the week 4 VND higher than on Monday.
The rates listed at commercial banks also changed in different directions but ending the week mostly up compared to the beginning of the week.
https://en.vietnamplus.vn/reference-exchange-rate-down-5-vnd-on-october-18/162245.vnp