Interactive Brokers' Peterffy: Robinhood could be one of the greatest meme stocks of the future

"I think that this is going to be one of the greatest meme stocks of the future," Thomas Peterffy, founder and chairman of Interactive Brokers, told CNBC's "Squawk Box" Friday about trading app Robinhood. "They have negative equity. They have roughly zero earnings, and they are growing very fast, so that's the kind of thing that the market seems to like lately."