The Royal Gazette/Bermuda Stock Exchange Index yesterday gained 21.63 points to close at 3,310.06.

Bank of Butterfield shares fell 25 cents to $45.50 on trading of 7,179 shares.

Bermuda Commercial Bank Ltd. shares gained 95 cents to $11.50 as investors bought and sold 1,100 shares.

Belco Holdings Ltd. shot up $2.25 to $41 while 100 shares traded. Watlington Waterworks also saw trading of 100 shares and the company's shares climbed $2.50 to $9.