The Royal Gazette/Bermuda Stock Exchange Index closed unchanged yesterday at 3,320.63. Bank of Butterfield closed unchanged at $42.10 after investors traded 1877 shares. BF&M also closed unchanged at $14 when investors traded 1800 shares. KeyTech Ltd. - the parent company of Logic, BTC and Mobility and part-owner of QuoVadis and Cablevision - was the only other stock to see movement. It closed unchanged at $10.30 after investors traded 3,259 shares.