Butterfield shares closed unchanged at $1.40 as 4,873 shares changed hands on the Bermuda Stock Exchange Thursday. The BSX was closed yesterday for the May 24 holiday.BF&M shares declined 50 cents, or 3 percent, to $16.25 as 900 of the shares traded.Ascendant Group shares fell 5 cents, or 0.43 percent, to $11.50 as 2,200 shares traded.Overall the BSX closed down 2.26 percent, or 0.19 percent, at 1,150.99.