REGULATION WATCH- EGX tweaks criteria for inclusion in the benchmark EGX30.The main change in the mechanism is in evaluating shares by trading volumes on a monthly basis, rather than on a bi-annual basis, the bourse said in a statement. A stock will be included in the EGX30 based on the number of months it is among the top 30 shares by volume traded during a six-month evaluation period (new stocks will be evaluated from when they start trading till the end of the evaluation period).The number of days required for the stock to remain trading for inclusion was raised to 78 instead of 60 during the evaluation period. Take a look at the new rules here (pdf).