Bank of Butterfield shares were up slightly in trading on the Bermuda Stock Exchange yesterday. Shares rose 0.7 percent ($0.01) to close at $1.36.Shares of Ascendant Group also traded, ending the day down 10 cents (0.01 percent) at $11.55.Overall, the BSX was up 5.9 points (0.50 percent) to close at 1,121.87.