The index closed 14.60 points higher after gaining 0.63 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange increased by 24% to VND15.15 trillion ($624 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 29 tickers gained.
MSN of conglomerate Masan Group led with a 5.4% rise, followed by PLX of fuel distributor Petrolimex, up 2.5%.
GAS of state-owned Petrovietnam Gas went up 2.4% and VHM of property giant Vinhomes closed 2.2% higher.
GVR of Vietnam Rubber Group was the only blue chip that fell with a 0.2% decline.
Foreign investors were net sellers to the tune of VND123 billion, mainly selling HPG of steelmaker Hoa Phat Group and VNM of dairy giant Vinamilk.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 0.52%, while the UPCoM-Index for the Unlisted Public Companies Market went up 0.07%.