Shares of HSBC Holdings Plc improved by 10 cents, or 1.3 per cent, to $7.75 after 43,315 traded on The Royal Gazette/BSX Index.The index was unchanged at 2,404.48, while the BSX Insurance Index was up 6.94 points, or 0.4 per cent, at 1,743.72.On the New York Stock Exchange, shares of Butterfield Bank were up 40 cents, or 1.08 per cent, at $37.42.