The index closed 6.50 points higher after gaining 5.32 points on Monday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) increased by 35.6% to VND14.64 trillion ($617.46 million).
Foreign investors were net sellers after four buying sessions. Their sale exceed purchase by VND453.42 billion with a strong emphasis on VHM of property giant Vinhomes and STB of Ho Chi Minh City-based lender Sacombank.
The VN-30 basket, comprising the 30 largest capped stocks, saw 19 tickers gain.
PLX of fuel distributor Petrolimex gained 5.8%, followed by SSI of leading brokerage SSI Securities Corporation with a 3.1% increase.
NVL of property developer Novaland Group grew 2.1% and PDR of Phat Dat Real Estate Development closed 1.8% higher.
Six blue chips fell, including BID of state-owned lender BIDV with a 1.1% decline.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 0.95% while the UPCoM-Index at the Unlisted Public Companies Market was down by 0.28%.