Argus Group Holdings Ltd fell 12.38 percent (65 cents) on The Bermuda Stock Exchange (BSX) yesterday.The insurer traded 10,400 shares to close at $4.60.Butterfield Bank also dropped 0.69 percent (0ne cent) to $1.42 as 15,900 shares changed hands.Overall the Index declined 16.62 points (1.37 percent) to 1,192.64 with 26,300 shares worth $72,728 transacted.The BSX Insurance Index also slipped 12 points (1.24 percent) to 955.