Butterfield Bank dropped 3.62 percent (five cents) on The Bermuda Stock Exchange (BSX).The bank traded 1,500 shares to close at $1.33.The Ascendant Group Ltd also saw 500 shares change hands as its share price rose 0.35 percent (five cents) to $14.05.Overall the Index slipped 23.48 points (1.99 percent) to 1,157.57.The BSX Insurance Index, however, was up seven points (0.69 percent) to 1,021.