At the close, the index was down 36.41 points, to 1,364.09 points, on turnover of Bt44 billion. The market witnesses losses in four of the last five trading days. From end-May, the index has lost over 10 per cent.
Foreign investors remained net-sellers today, as sells surpassed purchases by Bt2.3 billion.
China's stock market today plunged by more than 5 per cent - leading to falls in global markets, amid concern a cash crunch will hurt the world's second-largest economy.