Shares of Argus Group Holdings Ltd fell 1.9 per cent in Bermuda Stock Exchange trading.The insurer dipped four cents to close on $2.05 as 110,000 shares changed hands.One Communications Ltd was the only other stock to trade. The telecommunications group closed unchanged as $4 as 161,801 shares were traded.The Royal Gazette/BSX Index fell 0.8 points, or 0.05 per cent, to close on 1,542.73.The US-listed shares of Butterfield Bank fell 55 cents, or 3.08 per cent, to close on $17.29 on the New York Stock Exchange.The BSX Insurance Index fell 32.76 points, or 2.66 per cent, to close on 1,198.96.