Bermuda Commercial Bank shares closed up 10 percent on the Bermuda Stock Exchange yesterday.BCB’s shares closed up $1 at $11.00 as 200 of them changed hands.Butterfield Bank also traded, with 3,770 shares exchanged, closing unchanged at $1.23.And 50 Ascendant shares traded, closing unchanged at $12.40.Overall the BSX closed at 1,071.60, up 6.00, or 0.56%