Shares of Argus Group Holdings Ltd improved by five cents, or 2.2 per cent, to $2.35 after 35,242 traded on The Royal Gazette/BSX Index.Meanwhile, in New York, Butterfield Bank shares were down five cents, or 0.2 per cent, at $24.36.The Royal Gazette/BSX Index was up one point, or 0.05 per cent, at 1,840.2, while the BSX Insurance Index was up 38.59 points at 2.81 per cent.