We also consider two additional factors that account for the finding that in some periods prices drift away from fundamentals. The first factor is the return of Bitcoin. We argue that Bitcoin, being the largest and most traded cryptocurrency, is the most perceptible to sentiment and speculative trading by investors. Thus, as a factor, it can capture periods when trading forces unrelated to fundamentals are the strongest. The second factor is a cryptocurrency price momentum factor that we construct following the seminal work of Jegadeesh and Titman (1993). Momentum effects have been linked to investor psychology (e.g. Barberis et al. 1998).
The billionaire entrepreneur said: “We are concerned about rapidly increasing use of fossil fuel for Bitcoin mining and transactions, especially coal, which has the worst emissions of any fuel.”

"The U.S. has always been a very important market; globally it's one of the biggest markets for any business, including in cryptocurrency," he said. "We want to be fully compliant. Before we didn't feel we had the experience to do that but now we have our partners so we want to take this opportunity to explore the market."
"For any centralized service, we have to do [client verification] and hold customer data," Zhao said. "On top of that we have to hold customer assets. Unlike banks, when the assets get stolen it's difficult to get them back. There's a high responsibility on the centralized exchanges we need to carry out well."