Shares tumbled on September 16 amid restructuring from the two exchange-traded funds in the domestic market.

FTSE Vietnam Index and Market Vectors Vietnam ETFs began their first day of portfolio restructuring on the day, with all eyes on Sai Gon-Hanoi Bank (SHB), PetroVietnam Finance (PVF), Da Nang Rubber (DRC), Song Da Construction (SJS), Pha Lai Thermalpower (PPC), Vietcombank (VCB) and construction giant Vinaconex (VCG).

SHB led the market in trading volume, with 23.6 million shares changing hands, its highest level since February. Foreign investors bought 5.6 million SHB shares before it closed the day's session at 6,900 VND, up 6.2 percent.

Meanwhile, the funds stopped flowing to other stocks.

On the Ho Chi Minh Stock Exchange, the VN-Index shed 0.18 percent to 475.57 points.

Total trading value jumped 40.8 percent compared to the previous session on September 13 to 668.6 billion VND (31.5 million USD) on a volume of 38.5 million shares.

Blue chips closed mixed, with the VN30 edging up 0.15 percent to 531.99 points.

On the Hanoi Stock Exchange, the HNX-Index slid 0.26 percent to 60.03 points.

Trading value soared 170 percent over September 13 to 256.4 billion VND (12 million USD) due to high transactions on SHB, while trading volume fetched more than 38 million shares.

The HNX30 rose 0.15 percent to 110.40 points, buoyed by outperforming blue chips.-VNA