What's driving the bitcoin surge? Experts weigh in.
Westend61/Getty Images (NEW YORK) -- Bitcoin is on a tear. The largest cryptocurrency has soared more than 20% over the last four days, approaching an all-time high. By contrast, t…
Westend61/Getty Images (NEW YORK) -- Bitcoin is on a tear. The largest cryptocurrency has soared more than 20% over the last four days, approaching an all-time high. By contrast, t…