The Bermuda Stock Exchange rose 2.1 percent yesterday to close up 22.53, at 1,089.48.Butterfield Bank rose 1.6 percent, or two cents, to close at $1.27 as 189,085 shares traded.Argus Group rose nearly eight percent, or 25 cents, to end the day at $3.40 as 17,313 shares changed hands.Ascendant Group saw its shares rise 5.6 percent, or 61 cents, to end at $12.15 as 6,100 shares traded.And KeyTech rose 4.1 percent or 24 cents to end at $6 on a volume of 5000 shares.