Shares of HSBC Holdings Plc improved by 35 cents, or 4.79 per cent, to $7.65 after 6,224 changed hands on The Royal Gazette/BSX Index.On the New York Stock Exchanges, shares of Butterfield Bank were up 36 cents, or 0.96 per cent, at $37.74.The Royal Gazette/BSX Index was unchanged at 2,385.7, while the BSX Insurance Index rose 11.46 points, or 0.66 per cent, to 1,744.23.