India, Oct. 29 -- This morning, Vietnam's VNI index turned red by 0.69%, with midcap index HNX following suit and falling to 257.33 points. The shocking decline comes after 2 days of strong showings on both indices. Experts believe that high selling pressure among domestic investors triggered the decline.

Why is Vietnam's Stock Market Down Today?

Vietnam's stock market is under selling pressure because investors are still cautious after recent market swings, weakness in some big stocks, and ongoing foreign investor outflows. The VN-Index has had trouble keeping its upward momentum, and the Hanoi Stock Exchange's HNX-Index has also looked weak in recent sessions.

The latest market weakness comes from several things, including profit-tak...