The index closed 2.98 points higher after gaining 11.22 points on July 13.
Trading on the Ho Chi Minh Stock Exchange (HoSE) increased by 25.29% to VND20.87 trillion ($883 million).
Foreign investors were net sellers to the tune of VND300.67 billion, mainly selling STB of Ho Chi Minh City-based lender Sacombank and VPB of private lender VPBank.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 0.10% while the UPCoM-Index at the Unlisted Public Companies Market was up by 0.06%.