The State Bank of Vietnam (SBV) set the central exchange rate at VND 25,236 per US dollar on September 8, down 12 dong from September 5.
On the same day, Google Finance quoted the mid-market rate at VND 26,414.98 per US dollar, 15 dong higher than the previous session.
On the black market, the buy rate rose to VND 26,915 and the sell rate to VND 27,015, with the mid-market rate reaching VND 26,965.
The spread between black market and Google Finance mid-rates widened to 550 dong, or 2.08 percent, compared with 1.70 percent on September 5.
Open market operations showed a significant rise in liquidity injections.
Repo transactions jumped, with US$509.1 million offered on seven-day terms and US$492.1 million on 28-day terms.
Shorter 14-day repos reached US$357.5 million, while a smaller US$6.9 million was placed in 91-day repos.
No new T-bills were issued.
Interbank rates were stable.
Overnight and one-week rates held at 4.7 percent and 4.8 percent, respectively, while the one-month tenor remained at 4.87 percent. Three-month and six-month rates stayed at 5.62 percent and 5.63 percent.
See also: How Low Can the Vietnamese Dong Go? Why it’s Sliding & What Might Happen Next