Bank of NT Butterfield Preference shares climbed $4.99, or 0.4 percent, to $1,199.99, with 35 shares changing hands on the Bermuda Stock Exchange last week.Butterfield Bank climbed $3, or 2.2 percent, to $1.40, as 25,000 shares changed hands.Devonshire Industries was unchanged at $3 as 1,000 shares changed hands.Ascendant Group Limited was unchanged at $11.74 as 600 shares changed hands.Overall, the Bermuda Stock Exchange index rose 13.33, or 1.15 percent, to 1,158.18 during a short trading week due to the Cup Match holiday.