Trading exploded on Jan 9 on both stock exchanges as investors responded positively to good news from a key State Securities Commission's meeting during the day.

The commission announced that the Ministry of Finance would raise the margin (debt to equity) from the current 40-60 to 50-50 on February 1.

In an additional bid to boost liquidity on the market, the intra-day maximum fluctuation rate of a stock will increase from 5 percent to 7 percent on the HCM City Stock Exchange and from 7 percent to 10 percent on the Hanoi exchange. The new regulation will take effect from January 15.

On the HCM Stock Exchange, the benchmark VN-Index grew 0.36 percent, closing 448.77 points by the end of the day.

The VN30 tracking the top 30 shares was up 1.17 percent to 531.52 points.

Trading soared with almost 134.8 million shares, worth more than 1.9 trillion VND (90.9 million USD), changing hands.

A few blue chips retained big gains of nearly 5 percent including food processor Masan Group ( MSN ), dairy giant Vinamilk (VNM) and Sacombank (ST) thanks to high demand. Many others started to decline.

Meanwhile, without the support of large caps, the HNX-Index on the Hanoi bourse plummeted 0.57 percent to end at 59.61 points due to heavy profit-taking selling pressure.

By the end of the session, over 138 million shares, worth more than 1 billion VND (47.8 million USD), changed hands, with SHB still being the most active code with a whopping 29 million shares traded.

Foreign investors continued to increase their investment in local stock. They picked up a combined net buy of 238.4 billion VND (11.4 million USD) worth of shares on both exchanges.-VNA