Stock investors lost Tk 23,142 crore in the last three weeks but the regulator is yet to take any action to stem the tide.  Since June 27, the DSEX, the benchmark index of the Dhaka Stock Exchange, shed a staggering 397 points to close at 5,033 yesterday, which is the lowest in two-and-a-half years. The slide began when news emerged that fiscal 2019-20’s budget would be passed in the parliament on June 30 without any significant incentive for stocks and the market hardly rebounded since.