UBS chief investment officer Mark Haefele says the world's largest money manager will not include bitcoin investments.
The European Central Bank's Ewald Nowotny has said that China's recent crackdown has brought new focus on cryptocurrency regulations.
UBS chief global economist Paul Donovan has compared bitcoin to the Netherland's 1600s tulip crisis, but noted he was a fan of blockchain technology.
Bitcoin surpasses most recent price milestone following massive drop and equally large recovery.
Goldman Sachs CEO Lloyd Blankfein has said that he has not comfortable with bitcoin, but he is open to the cryptocurrency.