Argus Group Holdings Ltd and Butterfield Bank were the biggest traders on The Bermuda Stock Exchange (BSX) yesterday.Argus traded 6,000 shares and Butterfield 5,000, but their share prices held firma t $4.95 and $1.38 respectively.The Ascendant Group Ltd also saw 1,300 shares change hands, however its share price also remained unchanged at $14.50.Overall the Index was up 8.19 points (0.69 percent) at 1,193.64 with 12,300 shares worth $55,570 transacted.The BSX Insurance Index, meanwhile, dipped 15 points (1.46 percent) to 1,010.