Butterfield Bank shares fell two cents, or 1.4 percent, to $1.38 as 20,000 shares changed hands last week.The bank’s preference shares fell $9.99, or 0.8 percent, and closed at $1,190 as 20 shares changed hands.Ascendant Group fell 74 cents, or 6.3 percent, to $11 as 500 shares changed hands.KeyTech Ltd shares jumped nine cents, or 1.5 percent, to $6.10 as 400 shares changed hands.Bermuda National Ltd was unchanged at $12 as 2,700 shares changed hands. also unchanged was BF&M Ltd at $17.05 as 1,900 shares changed hands.The BSX Index finished the week 14.74, or 1.28 percent, lower to 1,143.44.