The index closed 3.70 points higher after gaining 2.61 points in the previous session.
Trading on the Ho Chi Minh Stock Exchange decreased by 5% to VND16.781 trillion (US$661.2 million).
The VN-30 basket, comprising the 30 largest capped stocks, saw 15 tickers gained.
VCB of state-owned lender Vietcombank went up 1.2%, TPB of private TPBank closed 0.9% higher, and BCM of Becamex Investment and Industrial Development rose by 0.9%
Nine blue chips fell. FPT of IT giant FPT Corporation slid 1.7%, PLX of fuel distributor Petrolimex went down 0.7%, and ACB of Asia Commercial Bank saw a 0.6% drop.
Foreign investors were net seller to the tune of VND471 billion, mainly selling FPT and ACB.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 0.12%, while the UPCoM-Index for the Unlisted Public Companies Market went up 0.11%.
Global shares held steady on Monday as investors took geopolitical tumult in their stride, Reuters reported.
U.S. stock index futures rose 0.1%, suggesting a move beyond last week's record highs for the S&P 500, Nasdaq and Russell 2000, while in Europe, the STOXX 600 got off to a stronger start, up 0.3%.
South Korean stocks slid 2.8% even as authorities pledged all-out efforts to stabilise financial markets amid uncertainty over the fate of President Yoon Suk Yeol.