TOKYO (Reuters) – Cryptocurrency bitcoin tumbled below $14,000 briefly on the Bitstamp exchange BTC=BTSP on Friday, down roughly 30 percent from its record top near $20,000 set at the start of the week.

It was last down 7 percent at $14,499 BTC=BTSP but fell as much as 14.7 percent earlier in the Asian day.

The cryptocurrency, which was at about $1,000 at the year’s start, had surged to a record high of $19,666 on Sunday in the lead up to exchange giant CME Group’s (CME.O) launch of its bitcoin futures.

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