The index closed 4.82 points higher after gaining 13.09 points on Friday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) fell by 1.03% to VND20.04 trillion ($846.67 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 16 tickers gain.
NVL of property developer Novaland Group led with a 6.9% rise, followed by MWG of electronics retail chain Mobile World, up 3.8%.
PDR of Phat Dat Real Estate Development went up 2.6% and VIB of Vietnam International Commercial Bank closed 2.2% higher.
Twelve blue chips fell.
VJC of budget airline Vietjet dropped 1.2% and GAS of state-owned Petrovietnam Gas lost 0.9%.
Foreign investors were net sellers to the tune of VND330.24 billion, mainly selling MSB of Vietnam Maritime Commercial Bank and SSI of leading brokerage SSI Securities Corporation.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 0.66% while the UPCoM-Index at the Unlisted Public Companies Market was up by 0.61%.