KeyTech fell 11.4 percent on the Bermuda Stock Exchange (BSX) yesterday.Two-thousand of the company’s shares traded, falling 68 cents to close at $5.31.In other trading, 70,100 Butterfield Bank shares changed hands, closing unchanged at $1.27.Overall the index closed down 8.43, or 0.75 percent, to finish at 1,108.96.The BSX Insurance Index was unchanged at 1006.00.