The virtual currency bitcoin continues surging to new highs as a frenzy of investors get in on the action. WSJ's Paul Vigna explains what you need to know, and how to invest should you want to join the mania. Bitcoin, this year’s hottest investing fad, has plenty of risks. The price could crash, after surging 1,600% this year. With this week’s launch of bitcoin futures, there is a new danger to worry about: the threat of manipulation involving futures markets.

Source: Wall Street Journal December 16, 2017 12:00 UTC