Stock prices lost the gains from April 3, plummeting on the two national stock exchanges, while investors worried about uncertainties in the market.

On the HCM Stock Exchange, the VN-Index lost 1.35 percent to finish April 4 at 439.77 points. Total market value decreased by 21.5 percent, to 652.5 billion VND (31.1 million USD), while trading volume declined by 15 percent, to 50.7 million shares.

Only two of the 30 leading stocks posted gains, leaving the VN30 Index down 1.09 percent, to stand at 500.28. Among the few winners were Refrigeration Electrical Engineering Corp (REE), up 1.38 percent to 14,700 VND, and PetroVietnam Finance (PVF), up 2.43 percent to 12,600 VND.

Telecommunications equipment provider, Sacom Development and Investment (SAM), saw the highest volume, with 3 million trades, with their stock value climbing by 3.28 percent to settle at VND6,300.

The Hanoi Stock Exchange was more active, with trading volume on the floor up 20 percent from the previous session, to 79.2 million shares, worth a total 665.6 billion VND (31.7 million USD).

The benchmark HNX-Index, however, fell 1.66 percent, to 73.25 points, as losses outstripped gains by 219 to 57.

Hanoi-based lender Habubank (HBB), the most active stock on the Hanoi bourse, with 15 million shares traded, edged up 1.4 percent to close at 7,000 VND , on the heels of the news that the State Bank of Vietnam approved the plan for a merger with Sai Gon-Hanoi Bank (SHB).

Foreign investors continued to purchase Vietnamese stocks on both exchanges, buying up a combined 51.2 billion VND (2.4 million USD) worth of shares.-VNA