The domestic companies index went down by 0.68 percent during the week ending January 19, closing at 8 759.24 points from 8 818.91 points the previous week, as indicated by Stockbrokers Botswana weekly report. For the year-to-date, the index decreased by 1.14 percent. A total of 1 529 844 securities valued at P3 088 400 were traded during the week.