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NEW YORK, NY - MAY 10: Co-founder and co-CEO of Robinhood Vladimir Tenev speaks onstage during TechCrunch Disrupt NY 2016 at Brooklyn Cruise Terminal on May 10, 2016 in New York City. (Photo by Noam Galai/Getty Images for TechCrunch)

NEW YORK, NY - MAY 10:  Co-founder and co-CEO of Robinhood Vladimir Tenev speaks onstage during TechCrunch Disrupt NY 2016 at Brooklyn Cruise Terminal on May 10, 2016 in New York City.  (Photo by Noam Galai/Getty Images for TechCrunch)

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Baiju Bhatt, co-founder and co-chief executive officer of Robinhood Financial LLC, stands for a photograph following a Bloomberg Technology television interview in San Francisco, California, U.S., on Thursday, Jan. 25, 2018. Bhatt explained why his company is going to start offering commission free trading for Bitcoin and Ethereum. Photographer: David Paul Morris/Bloomberg via Getty Images

Baiju Bhatt, co-founder and co-chief executive officer of Robinhood Financial LLC, stands for a photograph following a Bloomberg Technology television interview in San Francisco, California, U.S., on Thursday, Jan. 25, 2018. Bhatt explained why his company is going to start offering commission free trading for Bitcoin and Ethereum. Photographer: David Paul Morris/Bloomberg via Getty Images

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NEW YORK, NY - MAY 10: Co-founder and co-CEO of Robinhood Vladimir Tenev speaks onstage during TechCrunch Disrupt NY 2016 at Brooklyn Cruise Terminal on May 10, 2016 in New York City. (Photo by Noam Galai/Getty Images for TechCrunch)

NEW YORK, NY - MAY 10:  Co-founder and co-CEO of Robinhood Vladimir Tenev speaks onstage during TechCrunch Disrupt NY 2016 at Brooklyn Cruise Terminal on May 10, 2016 in New York City.  (Photo by Noam Galai/Getty Images for TechCrunch)

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Baiju Bhatt, co-founder and co-chief executive officer of Robinhood Financial LLC, speaks during a Bloomberg Technology television interview in San Francisco, California, U.S., on Thursday, Jan. 25, 2018. Bhatt explained why his company is going to start offering commission free trading for Bitcoin and Ethereum. Photographer: David Paul Morris/Bloomberg via Getty Images

Baiju Bhatt, co-founder and co-chief executive officer of Robinhood Financial LLC, speaks during a Bloomberg Technology television interview in San Francisco, California, U.S., on Thursday, Jan. 25, 2018. Bhatt explained why his company is going to start offering commission free trading for Bitcoin and Ethereum. Photographer: David Paul Morris/Bloomberg via Getty Images

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NEW YORK, NY - MAY 10: Co-founder and co-CEO of Robinhood Vladimir Tenev (L) and founder and CEO of Betterment Jon Stein speak onstage during TechCrunch Disrupt NY 2016 at Brooklyn Cruise Terminal on May 10, 2016 in New York City. (Photo by Noam Galai/Getty Images for TechCrunch)

NEW YORK, NY - MAY 10:  Co-founder and co-CEO of Robinhood Vladimir Tenev (L) and founder and CEO of Betterment Jon Stein speak onstage during TechCrunch Disrupt NY 2016 at Brooklyn Cruise Terminal on May 10, 2016 in New York City.  (Photo by Noam Galai/Getty Images for TechCrunch)