Bitcoin extended its eye-popping rally, approaching $19,000 for the first time in almost three years, while enthusiasts predict it will quickly surpass its all-time high.
The largest cryptocurrency gained as much as $875, or 4.9%, to $18,821 on Friday. Bitcoin has jumped more than 15% this week. Having more than doubled this year, the surge is spurring memories of its 1,375% rally in 2017 that took it close to $20,000. It plunged 70% the following year.
