The index closed 7.81 points higher after gaining 3.77 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange increased by 32% to VND21.097 trillion (US$828.3 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 21 tickers gained.
HPG of steelmaker Hoa Phat Group saw the biggest jump of 4.7%, followed by VNM of dairy giant Vinamilk with a 3.9% rise and SSI of brokerage SSI Securities Corporation, up 2.0%.
Six blue clips fell. FPT of IT giant FPT Corporation went down 1.1%, BCM of Becamex Investment and Industrial Development slipped 0.5% and PLX of fuel distributor Petrolimex closed 0.46% lower.
Foreign investors were net seller to the tune of VND259 billion, mainly selling FPT and MWG of electronics retail chain Mobile World.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 0.39%, while the UPCoM-Index for the Unlisted Public Companies Market went down 0.42%.