The index closed 14.05 points higher after gaining 5.75 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange increased by 25% to VND22.06 trillion ($867 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 27 tickers gained.
SAB of brewer Sabeco led with a 4.3% rise, followed by FPT of IT giant FPT Corporation, up 3.2%.
POW of electricity producer Petrovietnam Power Corporation went up 2.9% and MSN of conglomerate Masan Group closed 2.7% higher.
CTG of state-owned lender VietinBank was the only blue chip in the red with a decline of 0.6%.
Foreign investors were net sellers to the tune of VND1.15 trillion.
They mainly sold CTG and VNM of dairy giant Vinamilk.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 1.13%, while the UPCoM-Index for the Unlisted Public Companies Market gained 0.79%.