The index closed 11.87 points higher after gaining 10.26 points Friday.
Trading on the Ho Chi Minh Stock Exchange increased by 18.77% to VND15.51 trillion ($662.69 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 22 tickers gain.
BID of lender BIDV rose 4.6% to a four-month high.
HDB of lender HDBank also hit four-month high after climbing 3.5%.
Other gainers included MWG of electronics retailer Mobile World, up 3.2%, CTG of lender VietinBank, up 2.8%, and FPT of IT giant FPT Corp, up 2.8%.
Only four blue chips bucked the trend, with VNM of dairy giant Vinamilk and SSI of brokerage SSI Securities both losing 0.6%.
BVH of insurance company Bao Viet Holdings closed 0.5% lower, and GAS of Petrovietnam Gas dropped 0.3%.
Foreign investors were net buyers to the tune of VND65.19 billion, focusing of HPG of steelmaker Hoa Phat, HBD, and CTG.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, fell 0.18% while the UPCoM-Index at the Unlisted Public Companies Market lost by 0.22%.