KeyTech dropped 29 cents (5.5 percent) on the Bermuda Stock Exchange trading 14,600 shares to close at $4.69 for the week.Butterfield Bank traded 22,500 shares for the week to close at $1.31, down 1.5 percent or two cents.Watlington Waterworks traded 1,000 shares to close at $14.95, gaining 36 percent, or $3.95.Ascendant finished the week at $12.90, down nearly a percent.Overall, the BSX closed at 1,096.75, down 10.60 or almost a percent.