Bitcoin fell more than 10 per cent to below $14,000 on the Bitstamp exchange on Friday, extending overnight losses. It was last down 11 per cent at $13,872.
The cryptocurrency, which was at about $1,000 at the year's start, had climbed to a record high of $19,666 on Sunday in lead up to exchange giant CME Group's launch of bitcoin futures before losing steam.
Bitcoin is known to go through wild swings. In November, it tumbled almost 30 per cent in four days from $7,888 to $5,555. In September, it fell 40 per cent from $4,979 to $2,972.