Market Wrap: Bitcoin Briefly Drops Close to $28K as Ether Futures Heat Up News Profit-taking helped lead bitcoin lower Monday while more investors are eyeing ether with great interest. More courses:Market Wrap: Bitcoin Crosses $41.9K as Ether Futures…Market Wrap: Bitcoin Briefly Slips Below $19,000;…Market Wrap: Bitcoin Hangs at $36.4K While Ether…