Stock exchanges see more shares gaining slower than the previous session.

On the southern bourse, the VN-Index added just 0.77 percent to reach 516.33 points, having leapt nearly 3 percent over the previous day.

Gainers outnumbered losers by 141-73.

Trading value decreased slightly over May 27's level, reaching 1.4 trillion VND (66.6 million USD) with around 87.4 million shares changing hands.

Among blue chips tracked by the VN30, nine stocks tumbled while 16 made gains.

The frontrunners were Vinh Son-Song Hinh Hydropower (VSH), which hit its ceiling price, rubber company Casumina (CSM), which added 5 percent, and PetroVietnam Drilling Services (PVD), which put on 3.4 percent.

Meanwhile, Da Nang Rubber Co (DRC) was the biggest loser, dropping 2.8 percent.

The VN30 index closed at 577.40 points, marking a 0.45 percent rise.

On the Hanoi Stock Exchange, the HNX-Index crept up 0.85 percent to 64.07 points after struggling during the morning session.

Market value and volume reached 509.2 billion VND (24.2 million USD) and 63.8 million shares, equivalent to about 75 percent of the previous day's trades.

The HNX30, representing the northern bourse's 30 largest shares in terms of capitalisation and liquidity, increased 1.47 percent to 124.59 points. Ocean Hospitality and Service (OCH) was the only one blue chip to retreat.

As the stock market heats up, businesses have started to plan for listings. Last year, the market saw 26 new listed shares and fund certificates but 22 shares delisted.

Subsidiaries and affiliates of some currently listed companies plan to go public this year, including PetroVietnam Gas' (GAS) investment and construction arm PVID, investment corporation FLC's (FLC) FLC Global and PetroVietnam General Services' (PET) Petrosetco Distribution.

In addition, Da Nang Housing Construction Development and Future Investment Trend Company also plan to list shares.-VNA