The domestic companies index (DCI) went down marginally by 0.02 percent during the week ending March 9, closing at 8 687.50 points from 8 689.44 points the previous week, as indicated by Stockbrokers Botswana  weekly report. For the year-to-date, the index lost 1.95 percent. A total of 48 465 242 securities valued at P95 432 806 were traded during the week.