The currency fell below $ 13,000 on Friday, losing nearly a third of its value in just five days, with the digital currency heading for the worst week since 2013, after a strong rise to a peak close to $ 20,000 on Sunday.
The largest and most popular digital currency has increased 20 times since the beginning of the year, jumping from less than $ 1,000 to $ 16,666 on the Bitstamp Stock Exchange on Sunday and more than $ 20,000 on other markets.
After the rally, bitcoin has fallen daily since then, and the pace of the loss accelerated on Friday.
The currency fell to $ 12,560 in Bitstamp, down about 20 percent on Friday.
the currency was trading down 15 percent at $ 13,320, heading for the worst week in more than three months.
