The Thai stock exchange said on Wednesday that it would be closed for the last two trading days of the week due to violence that has gripped the capital Bangkok. The news was announced on the bourse's website. Dow Jones Newswires said a fire broke out on the ground floor of the Stock Exchange of Thailand's headquarters. Earlier, Thai protest leaders surrendered and told thousands of 'Red Shirt' supporters to end their weeks-long rally after an army assault on their fortified encampment left at least five people dead. The index was open for half a day before closing up 0.71 percent, or 5.43 points at 765.54. 