The index closed 1.02 points higher after gaining 10.09 points on Thursday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) fell by 8.96% to VND7.69 trillion ($322.84 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 18 tickers dropped.
VIB of Vietnam International Commercial Bank gained 2.9%, followed by STB of Ho Chi Minh City-based lender Sacombank with a 2.1% rise.
VHM of property giant Vinhomes went up 1.9%, and BID of state-owned lender BIDV rose 1.8%.
Eighteen blue chips fell.
MSN of conglomerate Masan Group lost 1.7%, and HPG of steelmaker Hoa Phat Group fell 1.4%.
Foreign investors were net sellers to the tune of VND12.28 billion, mainly selling STB and HPG.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was down 0.42% while the UPCoM-Index at the Unlisted Public Companies Market was down by 0.90%.