The index closed 2.98 points higher after gaining 11.22 points on Thursday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) increased by 25.29% to VND20.87 trillion ($883 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 12 tickers gain.
FPT of IT giant FPT Corporation and VJC of budget airline Vietjet both led with a 3.2% increase.
HPG of steelmaker Hoa Phat Group went up 1.7% and HDB of HDBank closed 1.6% higher.
Fifteen blue chips fell. STB of Ho Chi Minh City-based lender Sacombank dropped 3.3% and PDR of Phat Dat Real Estate Development fell 1.6%.
Foreign investors were net sellers to the tune of VND300.67 billion, mainly selling STB of Ho Chi Minh City-based lender Sacombank and VPB of private lender VPBank.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 0.10% while the UPCoM-Index at the Unlisted Public Companies Market was up by 0.06%.