Exchange, as the index fell 0.63 points to 1,267.55 on a volume of 17,993 shares valued at $290,573.75.

Six issues traded, one declining while four were unchanged in value. Belco Holdings Ltd. fell 1 to $23 on a volume of 983. Trading unchanged were the Bank of Bermuda at $25.75 on a volume of 8,825, the bank's warrants at $3.50 on a volume of 5,000, Bank of Butterfield at $14 on a volume of 597, Bermuda Commercial Bank at $5 1 on a volume of 2,400, and Argus Insurance at $16 on a volume of 188.