The index closed 4.4 points higher after gaining 10.4 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange decreased by 7% to VND16.29 trillion (US$638 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 18 tickers gained.
VHM of property giant Vinhomes led with a 3.7% gain, followed by GVR of Vietnam Rubber Group, up 2.2%.
TCB of private lender Techcombank rose 1.7% and MWG of electronics retail chain Mobile World went up 1.6%.
Seven blue chips dropped. LPB of Fortune Vietnam Bank declined by 1.1% and FPT of IT giant FPT Corporation closed 0.7% lower.
Foreign investors were net sellers to the tune of VND391 billion.
They mainly net sold FPT and MWG.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 0.10%, while the UPCoM-Index for the Unlisted Public Companies Market went up 0.75%.