It closed 0.31 points lower after plunging by nearly 16 points Monday.
Trading on the Ho Chi Minh Stock Exchange (HoSE), on which the index is based, rose 18% to VND23.34 trillion ($956.36 million).
The VN30 basket, comprising the 30 largest capped stocks, saw 12 tickers fell.
VIC of private conglomerate Vingroup dropped 2.5%, followed by SAB of brewer Sabeco with a 2.2% decline.
BVH of insurance company Bao Viet Holdings lost 1.7% and BID of state-owned lender BIDV closed 1.2% lower.
STB of Ho Chi Minh City-based lender Sacombank rose 2.1% and HPG of steelmaker Hoa Phat Group went up 2%.
Foreign investors were net sellers to the tune of VND358 billion, mainly selling HPG of steelmaker Hoa Phat Group and STB of Ho Chi Minh City-based lender Sacombank.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, dropped 0.10% while the UPCoM-Index for the Unlisted Public Companies Market fell 0.11%.