The domestic companies index (DCI) went up by 0.86 percent during the week ending May 4, closing at 8 492.06 points from 8 419.92 points the previous week, as indicated by Stockbrokers Botswana weekly report. For the year-to-date, the index lost 4.15 percent. A total of 36 839 643 securities valued at P85 611 099 were traded during the week.