It closed 8.59 points higher after losing in two previous sessions. Trading on the Ho Chi Minh Stock Exchange (HoSE) fell 32.71% to VND13.84 trillion ($590.9 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 18 tickers gain.
GVR of the Vietnam Rubber Group gained 6.8% for its highest increase since June 10, while VCB of lender Vietcombank rose 4.2% to a six-month high.
Other gainers included PDR of property developer Phat Dat, up 2.4%, BID of lender BIDV, up 2.1%, and CTG of VietinBank, up 1.8%.
Eight stocks lost, with SSI of leading brokerage SSI Securities down 1.8%. It was followed by PLX of fuel distributor Petrolimex, down 1.5%, and VIB of Vietnam International Bank, down 1.2%.
Foreign investors were net sellers to the tune of VND13.53 billion, focusing on TLG of stationary producer Thien Long and PHR of Phuoc Hoa Rubber.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, fell 0.57% while the UPCoM-Index at the Unlisted Public Companies Market rose 0.9%