The index closed 5.51 points higher after gaining 3.96 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange increased by 18% to VND19.21 trillion ($789 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 16 tickers gained.
BID of state-owned lender BIDV rose 4.3%, followed by TCB of the largest private lender Techcombank, up 2.7%.
CTG of state-owned lender VietinBank gained 1.9% and VRE of retail real estate arm Vincom Retail went up 1.5%.
Thirteen blue chips fell. MSN of conglomerate Masan Group dropped 1.9% and MWG of electronics retail chain Mobile World fell 1.5%.
Foreign investors were net sellers to the tune of VND249 billion, mainly selling MSN and KBC of industrial real estate developer Kinh Bac City.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 0.24%, while the UPCoM-Index for the Unlisted Public Companies Market went down 0.16%.