Butterfield Bank shares rounded off a topsy-turvy week of trading on a positive note, rising 7.4 percent on the Bermuda Stock Exchange (BSX) yesterday.The bank shot up nine cents to $1.30, on the trading of 11,900 shares at the end of a week in which almost 415,000 Butterfield shares changed hands.West Hamilton Holdings Ltd, the company behind the planned Belvedere Place development on Pitts Bay Road, fell 35 cents, or 4.4 percent, to $7.65 as 2,500 shares traded.Ascendant Group Ltd, owner of Belco, remained unchanged on $14.50, as 3,004 shares were exchanged, while the only other domestic board issues to see trading activity was insurer Argus Group Holdings, which held steady on $4.75 on the trading of 1,500 shares.The Royal Gazette/BSX Index rose 42.83 points, or 3.8 percent, to close on 1,149.67. Volume was 18.904 shares and turnover was $85,182.The BSX Insurance Index fell five points, or 0.5 percent, to 993.