The index lost 0.12 point or 0.34% to close at 34.77.The gauge started with given mark of 100 on June 24, 2009 but it has never been back to that level.
The market volume soared to 1,924,500 for VND10.78 billion today, compared with 374,550 shares for VND2.95 billion on Thursday trading.
The market breadth was negative with 13 gainers, 19 losers, 10 unmoved and the rest untraded.
SPC was the biggest gainer for the second today, climbing VND2,100 to hit the ceiling at VND23,900 on a trade of 100 shares.
WSB was the biggest loser, giving up VND2,000 to hit the floor at VND18,300 with 156,800 units changed hands.
NT2 was the most active stock today with 1,300,000 shares traded, its reference price was VND4,300/unit.
Foreigners sold 156,800 WSB shares today.