CNBC Disruptor 50: Where they are now

Jack Dorsey, chief executive officer of Square on the floor of the New York Stock Exchange at the company's IPO, November 19, 2015.
Yana Paskova | Bloomberg | Getty Images

Despite recent reports about mutual funds and other late-stage investors writing down the value of their start-up investments — as well as warnings of a tech bubble deflating — the valuation of the companies on CNBC's Disruptor 50 list is surging.

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