The Bermuda Stock Exchange remained unchanged at 1,121.79 after another quiet day for the index.Shares of BF&M and Butterfield Bank were the only ones traded, with neither seeing any change in their closing price.A total of 150,113 shares of Butterfield Bank changed hands. The bank stock’s price remained at $1.35. Similarly shares of BF&M stayed at $16.00 although 6,400 changed hands.