The amount included VND300 billion (US$13.2 million) worth of five-year-bonds with interest rate of 4.6% per annum, 0.12% higher than the previous auction on July 19.
Bidders also bought VND133 billion (US$5.8 million) worth of 30-year-bonds with annual interest rate of 6.1%, down 0.12% from the previous auction on July 26. 

Meanwhile, there were no successful bids for 20-year bonds.

As of the beginning of this year, the State Treasury has raised more than 143.8 trillion through auctions at the HNX.