Butterfield shares fell on the Bermuda Stock Exchange yesterday.The bank’s shares closed at $1.22 down 3 cents, or 2.4 percent, on a volume of 8,000.Argus shares fell 1.3 percent, or 5 cents, ending at $3.75 as 9,500 shares changed hands.And Bermuda Aviation Services shares closed unchanged at $3.10 on a volume of 1,000.Overall the Index closed down 15.12, or 1.39 percent, at 1,072.70