Photographer: Michael Nagle/Bloomberg Bitcoin is missing out on the Christmas cheer. As traditional markets move into the final days of the year with a burst of seasonal optimism, the world’s largest cryptocurrency has barely stirred. Bitcoin is trading around $87,370, pinned in a$85,000 to $90,000 range and showing little sign of life — an asset built on hype, volatility and disruption ending the year in a standstill. Most Read from Bloomberg The lethargy follows a bruising autumn. A sharp selloff i ...