Bermuda Commercial Bank jumped 50 cents (4.54 percent) on the Bermuda Stock Exchange yesterday, trading 200 shares to close at $11.50.Ascendant Group dropped 28 cents (2.15 percent), trading 3,060 shares to close at $12.72.KeyTech traded 50 shares to close at $6 with no change in share price.Overall, the BSX closed at 1,096.60, up .56 points (.05 percent), trading 3,310 shares worth BD$41,568.45 and 900 US shares worth US$7,887.50.