I'm "still thinking about #Bitcoin," Lloyd Blankfein, chairman and CEO of Goldman Sachs, said in a tweet. I have "no conclusion. [I'm] not endorsing/rejecting."
I "know that folks also were skeptical when paper money displaced gold," Blankfein said.
On Monday, Goldman Sachs said in response to client interest, it is exploring a new trading operation focused on bitcoin and other digital currencies.
Morgan Stanley CEO James Gorman took the other side and said cryptocurrencies are "certainly something more than just a fad" and have "a sort of government risk factor."