Butterfield Bank’s preference shares fell 1.6 percent ($20) on The Bermuda Stock Exchange (BSX) yesterday.The bank traded two shares to close at $1,230.It also saw 14,300 common shares change hands as it dropped 0.7 percent (one cent) to $1.40.The Index, as a whole, declined 4.78 points (0.4 percent) to 1,197.71 as 14,300 shares worth BD$20,020 and two shares worth US$2,470.22 were transacted.The BSX Insurance Index also dipped 11 points (1.12 percent) to 973.