The index closed 8.57 points higher after gaining 3.13 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange decreased by 15% to VND24.36 trillion ($986.43 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 20 tickers gained and 10 fell.
MSN of conglomerate Masan Group led with a 6.9% rise, followed by MWG of electronics retail chain Mobile World, up 5.5%.
BID of state-owned lender BIDV and MBB of lender MB both gained 1.7%.
Six blue chips fell. VRE of retail real estate arm Vincom Retail dropped 1.1% while TPB of private TPBank declined 1%.
Foreign investors were net sellers to the tune of VND103 billion, mainly selling SSI of leading brokerage SSI Securities Corporation and VHM of property giant Vinhomes.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, fell 0.01%, while the UPCoM-Index for the Unlisted Public Companies Market went up 0.71%.