The index closed 2.87 points higher after losing 5.34 points on Tuesday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) fell by 27.10% to VND19.16 trillion ($807.06 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 16 tickers gain.
NVL of property developer Novaland Group gained 3.15, followed by PDR of Phat Dat Real Estate Development with a 2.6% increase.
CTG of state-owned lender VietinBank went up 2.1% and BID of state-owned lender BIDV closed 1.9% higher.
MSN of conglomerate Masan Group dropped 1.7% and BCM of Becamex Investment and Industrial Development closed 1.4% lower.
Foreign investors were net buyers to the tune of VND162.97 billion, mainly buying MSB of Vietnam Maritime Commercial Bank and CTG of state-owned lender VietinBank.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 0.82% while the UPCoM-Index at the Unlisted Public Companies Market was up by 0.70%.