The index closed with a 2-point drop, while trading value on the Ho Chi Minh Stock Exchange (HoSE) fell 5.4 percent to VND24.38 trillion ($1 billion).

Foreign investor net sales surged 36 percent to VND1.89 trillion, the highest since Jan. 15. They have been net selling for seven sessions in a row.

Most sales pertained to VHM of real estate giant Vinhomes, SSI of leading brokerage SSI Securities Corporation and VNM of dairy giant Vinamilk.

The VN30 basket, comprising the 30 largest capped stocks, saw 16 tickers in the red, led by PDR of Phat Dat Real Estate Development with a 2.4 percent drop.

SSI fell 1.8 percent, while VPB of private lender VPBank lost 1.7 percent.

VIC of biggest private conglomerate Vingroup continued its downward trend that began in April.

VHM of real estate giant Vinhomes fell for the third session in a row to the lowest since Aug. 2.

On the winning side, BVH of insurance company Bao Viet Holdings led with a 2.1 percent gain, followed by MSN of conglomerate Masan Group, up 1.5 percent.

The HNX-Index for stocks on the Hanoi Stock Exchange, home to mid and small caps, rose 0.5 percent while the UPCoM-Index for the Unlisted Public Companies Market 0.3 percent.