The index closed 26.47 points higher after gaining 34.23 points on Monday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) increased by 14% to VND18.25 trillion ($738.12 million)
The VN-30 basket, comprising the 30 largest capped stocks, saw 22 tickers gain.
KDH of real estate firm Khang Dien House surged 6.9%, followed by NVL of real estate developer Novaland Group, up 6.8% and VIC of biggest private conglomerate Vingroup, 6.8%.
PDR of Phat Dat Real Estate Development went up 6.7%, and MWG of electronics retail chain Mobile World rose 6.6%.
Four blue chips fell. SAB of brewer Sabeco lost 0.6%, and VIB of Vietnam International Commercial Bank fell 0.5%.
Foreign investors were net buyers to the tune of VND2.633,49 billion.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 2.04% while the UPCoM-Index at the Unlisted Public Companies Market was up by 0.50%.