The index closed 2.3 points higher after gaining 4.2 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange decreased by 6% to VND21.39 trillion (US$840 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 12 tickers gained.
The top gainers included VPB of private lender VPBank with a 1.5% rise.
It was followed by MWG of electronics retail chain Mobile World, up 1.3%, and MBB of lender MB with a 1.2% increase.
BVH of insurance company Bao Viet Holdings declined by 2.3%, followed by FPT of tech giant FPT Corporation, down 1.3%.
Foreign investors were net sellers to the tune of VND218 billion, mainly selling MSN of conglomerate Masan Group and FPT of IT giant FPT Corporation.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 0.45%, while the UPCoM-Index for the Unlisted Public Companies Market went up 0.24%.