Butterfield Bank shares gained 2.35 percent ($0.03) on the Bermuda Stock Exchange yesterday. 3,400 shares traded ending the day at $1.30 a piece.Shares of Butterfield’s preferred stock were also up $5.00 (0.41 percent) closing at $215.00 with 120 share trading.Overall, the BSX ended up 14.22 (1.30 percent) to close at 1,109.04.