KeyTech jumped 74 cents (14.23 percent) on the Bermuda Stock Exchange yesterday, closing at $5.94, trading 4,500 shares.Butterfield Bank closed at $1.24 trading 10,000 shares with no change in share price.Overall, the BSX closed at 1,079.54 up 9.17 points (.86 percent), trading 14,500 shares worth BD$39,010 and 324 US shares worth US$2,802.60