KeyTech Ltd shares fell 15 cents, or 2.7 percent on the Bermuda Stock Exchange (BSX) yesterday, to close at $5.45.One hundred and six shares in the telecoms company traded.Butterfield Bank remained unchanged at $1.50 as 150,900 shares changed hands.Overall the BSX was down 1.88 at 1,231.75.The BSX Insurance Index closed four points down at 877.