Shares of Bermuda Aviation Services Ltd fell 40 cents, or 28.7 per cent, to $1.10 after 1,800 traded on The Royal Gazette/BSX Index.Also falling was Ascendant Group Ltd, which lost $1.37, or 4.3 per cent, to close at $30.38 after 3,400 of its shares changed hands.While HSBC Holdings Plc was down 45 cents, or 9.78 per cent, at $4.15, after 3,930 shares were exchanged.There was also trading in 1,000 shares of Somers Ltd, but with no change to the closing price of $13.50.In New York, shares of Butterfield Bank were up 38 cents, or 1.46 per cent, at $26.41.The Royal Gazette/BSX Index was down 15.07 points, or 0.8 per cent, at 1,866.27, while the BSX Insurance Index was down 4.58, or 0.32 per cent, at 1,446.91.The BSX Insurance Index was down 4.58 points, or 0.32 per cent, at 1,446.91.