The index closed 5.18 points higher after gaining 4.82 points on Monday. It remains at the highest since September.
Trading on the Ho Chi Minh Stock Exchange (HoSE) increased by 0.50% to VND20.14 trillion ($851.06 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 13 tickers gain.
VCB of state-owned lender Vietcombank rose 3.5%, followed by TCB of the largest private lender Techcombank, up 3.2%.
VRE of retail real estate arm Vincom Retail went up 2.1% and SAB of brewer Sabeco closed 1.9% higher.
Twelve blue chips fell. GVR of Vietnam Rubber Group dropped 1.8% and MWG of electronics retail chain Mobile World fell 1.7%.
Foreign investors were net buyers to the tune of VND9.29 billion, mainly buying HPG of steelmaker Hoa Phat Group and SHS of Saigon – Hanoi Securities.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 0.17% while the UPCoM-Index at the Unlisted Public Companies Market was down by 0.12%.