The index closed 12.77 points higher after gaining 9.66 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange increased by 15% to VND19.65 trillion ($809.28 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 26 tickers gained.
MSN of conglomerate Masan Group led with a 5.1% rise, followed by BCM of Becamex Investment and Industrial Development, up 3.3%.
BID of state-owned lender BIDV closed 2.7% higher and VNM of dairy giant Vinamilk went up 2.6%.
Two blue chips fell. POW of electricity producer Petrovietnam Power Corporation lost 0.8% and FPT of IT giant FPT Corporation inched down 0.2%.
Foreign investors were net buyers to the tune of VND245 billion, mainly buying VHM of property giant Vinhomes 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 0.20%, while the UPCoM-Index for the Unlisted Public Companies Market went up 0.37%.