Shares on the HCM Stock Exchange advanced on Sept. 12, with the VN-Index closing the first session of the week at 462.93 points, a gain of 0.65 percent over the previous session’s close.

The value of trades jumped 20.5 percent over Sept. 9's level to 862.8 billion VND (41.7 million USD) while volume climbed 10.6 percent to 52.2 million shares.

The performance marked the 12th straight session of increases for the southern bourse's benchmark Index, "but investors are worrying if risks have fallen or are actually increasing," commented analysts for financial media company Stoxplus.

The increase of the VN-Index was largely due to strong gains by three of the 10 leading shares by capitalisation. Insurer Bao Viet Holdings (BVH), food processor Masan Group (MSN) and PetroVietnam Finance (PVF) all rose to their ceiling prices, while real estate developer Hoang Anh Gia Lai (HAG) closed up nearly 2 percent.

However, shares of real estate developer Vincom (VIC) bottomed out, and banking shares tumbled across the board, losing an average of 1.7 percent.

Moody's has given Vietnamese banks a negative outlook over the next 12-18 months.

On the Hanoi Stock Exchange, the HNX-Index rose by 2.3 percent to close at 78.53 points – with nearly 70 percent of all listed codes managing gains. Value reached 806.7 billion VND (39 million USD), a 12.7 percent increase, on a volume of 67.4 million shares.

Foreign investors ended the day as net buyers, picking up a combined net of 58.6 billion VND (2.8 million USD) worth of shares./.