The Bermuda Stock Exchange finished last week up 14.01, or 1.21 percent, at 1,155.30Some 21,100 Butterfield Bank shares changed hands, ending the week at $1.39, up 1.5 percent.Some 3,088 Bermuda National shares traded, closing unchanged Friday at $12.10.Ascendant Group ended the week unchanged at $11.20 as on a volume of 2,080.And 100 KeyTech shares traded closing up 6 percent, or 37 cents, at $6.49 for the week.