KeyTech jumped .45 cents (8.10 percent) on the Bermuda Stock Exchange yesterday, trading 42,616 shares to close at $6.Butterfield Bank traded 6,774 shares to close at $1.23, with no change in share price.Overall, the BSX closed at 1,064.36, up 5.58 points (.53 percent), trading 49,592 shares worth $264,990.02