KeyTech fell 25 cents (4.16 percent) on the Bermuda Stock Exchange yesterday, trading 1,000 shares to close at $5.75.Ascendant Group also fell 35 cents (2.88 percent), trading 5,645 shares to close at $11.80.Butterfield Preferred shares dropped one dollar (. 08 percent), trading 15 shares to close at $1,230.Butterfield Bank traded 5,580 shares to close at $1.22 with no change in share price.Overall, the BSX closed at 1,060.63, down 6.14 points (. 58 percent), trading 12,225 shares worth $BD80,832.85 and 15 US shares worth US$18,530.