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 surge in Bitcoin’s value in recent weeks follows the much anticipated first Bitcoin ETF debuting on the New York Stock Exchange, and a record-breaking October for the stock market in general.

The growth of SafeMoon, coupled with its online slogan, has drawn comparisons to the surge in popularity of another cryptocurrency Dogecoin.
“I’ve been through the 2017 cycle, too,” Yang says, referencing the ‘crypto crash’ of 2017 that saw many major cryptocurrencies, including Bitcoin, lose major value. “I know that these things are super volatile, like some days they can go down 80%.”