The domestic companies index went down by 0.48 percent during the week ending January 12, closing at 8 818.91 points from 8 861.89 points the previous week, as indicated by Stockbrokers Botswana  weekly report. For the year-to-date, the index decreased by 0.47 percent. A total of 2 151 596 securities valued at P6 299 982 were traded during the week.