The index closed 28.21 points higher after dropping 12.82 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange increased by 13% to VND19.846 trillion (US$780.7 billion).
The VN30 basket, comprising the 30 largest capped stocks, saw all tickers went up.
FPT of technology giant FPT Corporation saw the biggest increase of 6.95%, followed by GVR of Vietnam Rubber Group, up 6.88%, and MWG of electronics retail chain Mobile World with a 5% rise.
CTG of lender VietinBank closed 4.6% higher, HPG of steel giant Hoa Phat Group and TPB of private lender TPBank both went up 4.3%.
Foreign investors were net seller to the tune of VND244 billion, mainly selling FUEVFVND of exchange-traded fund DCVFMVN DIAMOND and VCB of state-owned lender Vietcombank.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 2.35%, while the UPCoM-Index for the Unlisted Public Companies Market went up 0.98%.