The daily reference exchange rate for December 19 was adjusted down 2 VND to 22,785 VND per USD. With the current trading band of +/- 3 percent, the ceiling rate applied to commercial banks for the day is 23,467 VND/USD and the floor rate is 22,103 VND/USD. On the contrary, the transaction office of the State Bank of Vietnam raised the buying rate by 5 VND from December 18 to 22,700 VND/USD and kept the selling rate unchanged at 23,421 VND/USD. The opening hour rates listed at commercial banks were rather stable compared to December 18. Vietcombank kept both rates unchanged at 23,270 VND/USD (buying) and 23,360 VND/USD (selling). Both rates at Techcombank also remained the same as on December 18 at 23,250 VND/USD (buying) and 23,360 VND/USD (selling). Meanwhile, the rates listed by BIDV rose by 5 VND to 23,275 VND/USD (buying) and 23,365 VND/USD (selling).-VNA