The index lost 0.18 point or 0.51% to close at 35.06.The gauge started with given mark of 100 on June 24, 2009 but it has never been back to that level.
The market volume increased to 652,173 shares changed hands for VND4.24 billion, compared with 133,780 shares changed hands for VND1.14billion on last Friday trading.
The market breadth was negative with 14 gainers, 17 losers, 7 unmoved and the rest untraded.
SDK was the biggest gainer today, climbing VND700 to close at VND10,300/unit on a trade of 90,500 shares.
SPC was the biggest loser for the fourth consecutive day, giving up VND1,900 to close at VND17,500 with 100 units changed hands.
CLS was the most active stock today with 337,000 shares traded, giving up VND300 per share to close at VND3,700/unit.
Foreigners bought 32,000 WSB shares and sold 40,000WSB shares today.