The measure lost 0.57 points, or 1.23%, to close at 45.72, the lowest since late June. The gauge dropped 24% from this years high on July 15, 2010. All three indices in Vietnam entered bear markets.
The UPCoM-Index, the measure of 88 unlisted public companies, dropped for a third day in a row as investors kept selling out amid market amid gloomy market trend.
The benchmark was created at a starting base of 100 points on June 24, 2009 but it has never been back to that level.
The market breadth still was very negative on the least favorite exchange where only six stocks closed higher, 30 ended lower, two stocks closed unmoved and 46 stocks finished without any trade.
The market volume rose 26% from a day earlier to 780,000 shares worth VND10 billion, up 23%.
CFC was the biggest gainer, adding 9.94% to VND27,300 on a trade of 100 shares - the smallest volume required for a trading order.
In the downswing, DGT was the biggest loser, dropping 10% to close at VND15,300 on a trade of 100 units
UDJ was the most active stock on a trade of 205,000 shares, which slid 8.78% to end at VND13,500.
Foreign investors picked up 18,500 HIG shares, which plunged 8.65% to end at VND19,000.
Source: fpts.com.vn