After being closed for two days due to technical problems, the market reopened on Thursday and soared amid very heavy trading. The VN-Index rose 2.7% to hit 1,117 in early afternoon, its highest level since November 2007, before sliding lower to close up 1.6%. The index has surged 6.8% over the last four trading days and has advanced in 18 of the last 21. Trading value on HOSE rocketed to USD631 million, more than triple the daily average of the past year.