Bitcoin's surge to unprecedented levels above $23,000 on Thursday is being met with much ballyhoo on Wall Street, but at least one technical expert warns that the popular digital currency could be primed for a pullback. Tom DeMark says that based on his timing models, the world's most prominent cryptocurrency is likely to retreat soon. "Although it appears treacherous to take such a stance, here is what our combined timing models are suggesting about Bitcoin at this time," he said, pointing to what he described as "pending upside trend exhaustion," which could play out Thursday or Friday, initiating a downside move for the nascent asset. "The prior instances in which this long term model has spoken include the precise December 18, 2017 high, the precise low day December 14, 2018, and then the precise June 26, 2019 high day," DeMark wrote.

He said that each warning for bitcoin's BTCUSD, 6.58% retrenchment was the precise high or low day. DeMark is a technical analyst who employs market-timing measures to determine when to buy and sell and asset. The prominent analysts says that bitcoin's decline from its June 26, 2019 high to a bottom March 16 was 9430 points, and adds that "if one were to add 9430 points to the June 26, 2019 high it projects upside to 23,288 which is the zone in which the current market is trading."