Symbiosis CEO, Samuel Junghenn says volatility is not a measure of an investment’s validity. Guggenheim’s Scott Minerd says BTC should be worth approximately £296,150. After bitcoin (BTC) recently set new highs, David Rosenberg, the chief economist, and strategist at Rosenberg Research & Associates has come out to bash the coin. He went on an interview on December 17, where he said Bitcoin is a massive bubble and that its investors do not understand how its supply works. Rosenberg, who is famous for identifying the housing market bubble 15 years ago, noted that most BTC enthusiasts do not even know who developed it or how it is mined.