The index closed 5.46 points higher after gaining 1.69 points on Friday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) increased by 2.89% to VND9.72 trillion ($413.44 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 20 tickers gain.
NVL of property developer Novaland Group hit the ceiling price with a 6.7% rise.
SSI of leading brokerage SSI Securities Corporation gained 2.7% and VCB of state-owned lender Vietcombank rose 2.2%.
HPG of steelmaker Hoa Phat Group and PDR of Phat Dat Real Estate Development both went up 2%.
Eight blue chips fell, led by PLX of fuel distributor Petrolimex with a 1.8% drop.
MSN of conglomerate Masan Group lost 1.7% and VHM of property giant Vinhomes closed 1.2% lower.
Foreign investors were net buyers to the tune of VND171.17 billion, mainly buying HPG and VHM.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 0.46% while the UPCoM-Index at the Unlisted Public Companies Market was down by 0.64%.