The index closed 2.75 points higher after gaining 10.95 points on Monday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) increased by 3.94% percent to VND19.14 trillion.
The VN-30 basket, comprising the 30 largest capped stocks, saw 17 tickers gain.
MWG of electronics retail chain Mobile World rose 2.2%, while CTG of lender VietinBank up 2.02%.
Meanwhile, HPG of steelmaker Hoa Phat Group dropped 1.44%, and NVL of property developer Novaland Group lost 1.34%.
Foreign investors were net sellers to the tune of VND126.83 billion ($5.35 million).
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 0.37% while the UPCoM-Index at the Unlisted Public Companies Market was up by 0.69%.