The index closed 1.28 points higher after gaining 9.51 points on Thursday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) fell by 16.20% to VND12.95 trillion ($550.48 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 17 tickers gain.
VJC of budget airline Vietjet led with a 4.2% gain, followed by STB of Ho Chi Minh City-based lender Sacombank, up 3.2%.
GVR of Vietnam Rubber Group went up 2.4%, and TPB of private TPBank increased by 2.3%.
Other gainers included PLX of fuel distributor Petrolimex, ACB of Asia Commercial Bank and HDB of HDBank.
Nine blue chips fell, with NVL of property developer Novaland Group hitting the floor again with a 7% drop.
VIC of biggest private conglomerate Vingroup fell 3% and VHM of property giant Vinhomes dropped 2.3%.
Foreign investors were net buyers to the tune of VND446.94 billion, mainly buying HPG of steelmaker Hoa Phat Group and STB of Ho Chi Minh City-based lender Sacombank.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 0.76% while the UPCoM-Index at the Unlisted Public Companies Market was down by 0.03%.