Argus Group Holdings Ltd. dropped 5.17 percent (30 cents) to $5.50 on The Bermuda Stock Exchange (BSX) yesterday.The insurer traded 1,415 shares during the day.Butterfield Bank, meanwhile, rose 3.2 percent (four cents) to $1.29, as 2,000 shares changed hands.KeyTech Ltd. also climbed 1.76 percent (11 cents) to $6.36, with 10,400 shares transacted.LOM (Holdings) Ltd. traded 40,500 shares, but its share price held firm at $3.20.Overall the Index inched up 15.05 points (1.31 percent) to 1,164.75, as 54,315 shares worth $199,682.25 changed hands.The BSX Insurance Index, however, slipped one point (0.1 percent) to 1,042.