Argus Group Holdings Ltd was the only stock to trade on the Bermuda Stock Exchange.The insurer remained unchanged on $2.80 on the trading of 23,686 shares.The Royal Gazette/BSX Index was unchanged on 2,291.05. Trading turnover for the day totalled $66,281.90. The US-listed shares of Butterfield Bank fell 27 cents, or 0.78 per cent, to close on $34.55 on the New York Stock Exchange, as 59,236 shares changed hands. The bank last traded at $34.69 on the BSX.The BSX Insurance Index fell 8.82 points, or 0.52 per cent, to close on 1,697.33.For the week, the RG/BSX Index gained 62.79 points, or 2.74 per cent. The gains were driven by a 4.3 per cent rise in Butterfield shares over the five days of trading.