The index closed 1.77 points higher after losing 55.49 points on Friday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) fell by 38.49% to VND22.17 trillion ($930.73 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 18 tickers gain.
CTG of state-owned lender VietinBank led with a 4.2% rise, followed by BID of state-owned lender BIDV, up 3.2%.
TPB of private TPBank went up 2.2% and BCM of Becamex Investment and Industrial Development closed 2.1% higher.
Eleven blue chips fell.
SSB of Southeast Asia Commercial Bank (SeABank) lost 3.1%, and GVR of Vietnam Rubber Group was down 2.8%.
Foreign investors were net buyers to the tune of VND82.45 billion, mainly buying VIC of private conglomerate Vingroup and CTG of state-owned lender VietinBank.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 0.85% while the UPCoM-Index at the Unlisted Public Companies Market was up by 0.26%.