The index closed 11.6 points lower after losing 8.73 points on Friday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) increased by 28.16% percent to VND10.46 trillion ($443.12 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 21 tickers dropped.
NVL of real estate developer Novaland Group hit floor price, down 6.9%. PDR of Phat Dat Real Estate Development dropped 6.6 %.
STB of Ho Chi Minh City-based lender Sacombank rose 3.59% and BID of lender BIDV inches up 3.38%.
GVR of Vietnam Rubber Group dipped 4.44%.
Foreign investors were net sellers to the tune of VND82.02 billion.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was down 1.92% while the UPCoM-Index at the Unlisted Public Companies Market was down by 0.18%.