Shares failed to retain earlier gains this morning, extending last Friday's losses.
On the HCM City Stock Exchange, the VN-Index closed the morning session at 424.64 points, a 0.6 per cent off with 186 losers out of 262 listed stocks.
Market value reached 48.7 per cent of last Friday's entire session, totalling VND368.2 billion (US$17.5 million) on a volume of 25.6 million shares.
The VN30, tracking the southern bourse's leading stocks in capitalisation and liquidity, retreated 0.44 per cent to 498.16 points.
Of these 30 shares, only food processor Masan Group (MSN) and property and entertainment services developer Vincom (VIC) advanced 2 and 1.9 per cent, respectively. Meanwhile, others tumbled or ended unchanged in price.
Trading was even lower in Ha Noi, with value and volume of trades reaching only VND214.2 billion ($10 million) and 20.9 million shares.
The HNX-Index on the Ha Noi Stock Exchange lost over 1.4 per cent to 72.26 points. Decliners outnumbered advancers by 170-38.
PetroVietnam Construction Co (PVX) was the most active code nationwide with nearly 2.2 million shares changing hands.