Cryptocurrency is a different world and the one challenge there is regulation,” Lee said. Some currencies are struggling to maintain early gains, while some small investors have already made a fortune. On Sunday, Bitcoin's share of global trading volume slipped below 50 percent for the first time since May. Bitcoin has fallen 70 percent from its peak in late December and is down more than 50 percent so far this year. Some investors have warned that it could be a bubble and that the almost $1,000 share price has tripled in less than three months. (Reporting by Tokyo Newsroom; Editing by Himani Sarkar) Read the original article on Reuters. Copyright 2017. Follow Reuters on Twitter. Related The original source of this article is Reuters. Copyright 2017. Follow Reuters on Twitter. Share this: Tweet WhatsApp Print More Email Pocket "This is a technological trick: if you multiply your demand for Bitcoin many times, the price goes up. Now that it's up, it's going to come back down, but it's going to come down