The index closed 0.58 points higher after losing 0.65 points on Friday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) fell by 14.42% to VND11.42 trillion ($459.51 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 13 tickers gained.
VRE of retail real estate arm Vincom Retail rose 3.8%.
VCB of state-owned lender Vietcombank gained 2.7%, and SSI of leading brokerage SSI Securities Corporation went up 2.5%.
Other gainers included CTG of state-owned lender VietinBank, BID of state-owned lender BIDV and GAS of state-owned Petrovietnam Gas.
Thirteen blue chips fell, with HPG of steelmaker Hoa Phat Group plunging 6.8% to floor price.
NVL of real estate developer Novaland Group dropped 3.4%, while MWG of electronics retail chain Mobile World fell 3%.
Foreign investors were net buyers to the tune of VND230.10 billion, mainly buying KDH of real estate firm Khang Dien House and MSN of conglomerate Masan Group.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was down 1.54% while the UPCoM-Index at the Unlisted Public Companies Market was up by 0.26%.