The insurance sector of the Bermuda Stock Exchange saw movement with trading in Argus Group Holdings Ltd and BF&M Ltd, which dropped 0.40.The Bank of NT Butterfield Ltd saw 27,300 shares change hands at 1.39.Argus was at 4.00 with 16,000 shares trading, but it was BF&M seeing 400 shares move at 18.90, that resulted in the BSX closing at 1,161.81, down 2.75.