Butterfield rose 4 cents, or nearly 3 percent, to close yesterday at $1.40 on the Bermuda Stock Exchange.Some 30,000 of the bank’s shares traded.KeyTech also rose, closing up 10 cents, or $1.78, at $5.70 as 4,000 shared changed hands.Overall the BSX closed up 20.12, or 1.78 percent, at 1,152.19.