Butterfield Bank fell 2.98 percent (four cents) on The Bermuda Stock Exchange (BSX) yesterday.The bank traded 500 shares to close at $1.30.BF&M Ltd, however, rose 0.69 percent (13 cents) to finish the day at $14.73 with 678 shares changing hands.Overall the Index dropped 18.23 points (1.57 percent) to 1,146.53 as 1,178 shares worth $10,576.10 were transacted.The BSX Insurance Index remained unchanged at 972.