The Bank of Butterfield lost 50 cents or 1.1 percent of its value on the Bermuda Stock Exchange yesterday, driving the Royal Gazette/BSX Index down 20.57 points.

The Index closed at 3,180.38 after the Bank fell to $43 on volume of 5,600 shares.

Argus was the only stock to trade, closing unchanged at its 52-week high of $26 on volume of 300 shares.