The index closed 1.67 points higher after gaining 4.46 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange decreased by 15% to VND11.29 trillion ($463.98 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 10 tickers gained.
BID of state-owned lender BIDV led with a 1.2% rise, followed by TCB of the largest private lender Techcombank and VJC of budget airline Vietjet, both went up 1%.
Twelve blue chips fell. STB of Ho Chi Minh City-based lender Sacombank dropped 1.3% and PLX of fuel distributor Petrolimex closed 1.2% lower.
Foreign investors were net sellers to the tune of VND535 billion, mainly selling HPG of steelmaker Hoa Phat Group and STB of Ho Chi Minh City-based lender Sacombank.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 0.14%, while the UPCoM-Index for the Unlisted Public Companies Market went up 0.79%.