The index closed 3.96 points higher after gaining 0.02 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange decreased by 4% to VND13.74 trillion ($563 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 14 tickers gained.
BCM of Becamex Investment and Industrial Development led with a 5.2% rise, followed by HDB of HDBank, up 2.1%.
GVR of Vietnam Rubber Group went up 2% and MWG of electronics retail chain Mobile World closed 1.8% higher.
Twelve blue chips fell. SAB of brewer Sabeco lost 1.2% and BID of state-owned lender BIDV closed 0.5% lower.
Foreign investors were net buyers to the tune of VND125 billion, mainly buying STB of Ho Chi Minh City-based lender Sacombank and PC1 of construction firm PC1 Group.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 0.71%, while the UPCoM-Index for the Unlisted Public Companies Market went up 0.29%.