Leon Cooperman says Apple, Tesla splits don't create value and calls Robinhood traders 'nuts'

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Wall Street veteran Leon Cooperman told CNBC on Monday that the wild trading in certain stocks in recent months is a warning sign for the stock market. 

The CEO and chairman of Omega Family Office said on "Squawk Box" that he sees signs that the market is nearing a top and that the day-trading surge on apps like Robinhood was a "nuts market."