The domestic companies index (DCI) went up by 0.19 percent during the week ending May 18, closing at 8 524.61 points from 8 508.14 points the previous week, as indicated by Stockbrokers Botswana weekly report. For the year-to-date, the index lost 3.79 percent. A total of 31 297 317 securities valued at P57 419 276 were traded during the week.