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We get calls, emails, 60,000 clients have traded something in this complex,” Steven Quirk, TD Ameritrade executive vice president, remarked during a panel at CoinDesk’s Consensus 2019. As Quirk said later: “As soon as you open the door, you’re going to get a lot of people” looking to participate in the market.
https://www.coindesk.com/td-ameritrade-exec-tens-of-thousands-of-our-clients-are-interested-in-crypto