The index closed 4.33 points higher after gaining 14.39 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange increased by 2% to VND23.073 trillion (US$906.6 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 14 tickers gained.
MSN of conglomerate Masan Group shot up 4.3%, GVR of Vietnam Rubber Group closed 2.5% higher, VRE of retail real estate arm Vincom Retail gained 2.0%.
Twelve bluechips declined. VCB of state-owned lender Vietcombank decreased by 0.9%, FPT of IT giant FPT Corporation lost 0.66% and PLX of fuel distributor Petrolimex fell 0.65%.
Foreign investors were net seller to the tune of VND793 billion, mainly selling VHM of property giant Vinhomes and MWG of electronics retail chain Mobile World.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 0.64%, while the UPCoM-Index for the Unlisted Public Companies Market went up 0.38%.