Bank of Butterfield shares dropped 2.02 percent ($0.03) in trading on the Bermuda Stock Exchange yesterday. The stock closed at $1.45 a share with 10,000 shares changing hands.Ascendant Group shares also traded, gaining 1.73 percent ($0.20) to close at $11.70 a share.Overall, the BSX closed down 12.43 points (1.05 percent) at 1,173.18.