Trading on the Ho Chi Minh Stock Exchange (HoSE), on which the index is based, dropped 8.8% to 19.77 trillion VND.
The VN30 basket, comprising the 30 largest capped stocks, saw 27 tickers fell.
The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, fell 0.9% while the UPCoM-Index for the Unlisted Public Companies Market dropped 0.63%.