KeyTech Ltd slipped 4.95 percent (30 cents) on The Bermuda Stock Exchange (BSX) yesterday.The telecommunications company traded 33,900 shares to close at $5.75.Butterfield Bank also saw 41,060 shares change hands as its share price rose 0.69 percent (one cent) to $1.45.Bermuda Aviation Services Ltd, meanwhile, transacted 57 shares, but its share value held firm at $3.60.Overall the Index was up 1.03 points (0.09 percent) at 1,204.99 with 75,017 shares worth BD$254,817.15 and 690 shares worth US$6,831 traded.