Bitcoin (BTC) at $34,000 may have gained a new convert after billionaire investor Howard Marks admitted that he needed to change his “skeptical view.” In his latest investor memo dated Jan. 11, Marks, who is co-chairman and co-founder of the $140 billion Oaktree Capital Group, noted that while he was critical of Bitcoin during its 2017 bull run, his son had “thankfully” bought in. Marks on crypto: Do you own research “Back in 2017, my memo ‘There They Go Again… Again’ included a section on cryptocurrencies in which I stated…