Cramer says Robinhood's earnings call sounded like crypto trading on the platform may be a fad

More In CNBC TV Picks

CNBC ProValue manager Bill Nygren says Netflix is a smart buy despite subscriber slowdown
CNBC ProShort-seller Jim Chanos likes being long the market in his hedge fund at current valuations
CNBC ProWall Street's Art Cashin says Monday's plunge could be the 'washout selling' the stock market needs