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Robinhood fires back after criticism

When Robinhood launched in 2015, it was touted as an app that allows commission-free trading for everything from stocks to ETFs to cryptocurrencies. But a report from Bloomberg says Robinhood makes more than 40 percent of its revenue from selling its data to high-frequency trading firms. Yahoo Finance's Seana Smith, Dan Roberts and Adam Shapiro talk with Robinhood co-founder Vlad Tenev.