The index lost 0.13 point or 0.45%, to close at 28.98. The gauge started with the given mark of 100 on June 24, 2009 but it has never been back to that level.
The market volume soared today to 191,900 shares changed hands for VND1.64 billion, compared with 76,240 shares changed hands for VND0.57 billion Monday.
The market breadth was negative with 14 gainers, 19 losers, 5 unmoved and the rest untraded.
DLV was the biggest gainer, adding VND1,500 to close at VND20,000 with 100 shares traded.
SDI was the biggest loser today, falling VND2,000 to hit the floor at VND21,000 on a trade of 5,000 units.
BTW was the most active stock for the second day today with 100,100 units traded, whose prices lost VND400 to finish at VND7,400/unit.
Foreigners bought 41,100 BTW shares, 5,000 DBM shares today.