Shares of Polaris Holding Co Ltd jumped $3.85, or 75 per cent, to $8.95 after 500 traded on The Royal Gazette/BSX Index.Argus Group Holdings Ltd declined by one cent, or 0.4 per cent, to $2.75 after 99,000 shares changed hands. Meanwhile, in New York, shares of Butterfield Bank were down 17 cents, or 0.55 per cent, at $30.82.The Royal Gazette/BSX Index was up 4.32 points, or 0.21 per cent, at 2,056.94, while the BSX Insurance Index dropped 43.37 points, or 2.52 per cent, to 1,675.02.