The index closed 4.46 points higher after gaining 4.42 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange increased by 4% to VND13.28 trillion ($546 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 19 tickers gained.
MWG of electronics retail chain Mobile World led with a 4.3% rise, followed by MSN of conglomerate Masan Group, up 2.7%.
VHM of property giant Vinhomes rose 1.6% and PLX of fuel distributor Petrolimex closed 1.3% higher.
Six blue chips fell. HDB of HDBank and TCB of the largest private lender Techcombank both dropped 0.8%.
Foreign investors were net sellers to the tune of VND413 billion, mainly selling HPG of steelmaker Hoa Phat Group and HCM of Ho Chi MInh City Securities Corp.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 0.39%, while the UPCoM-Index for the Unlisted Public Companies Market went up 0.46%.