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Specifically, they've been snapping up executive talent from investment banks and lenders. And they aren't stopping there.
However, they can't do it without some expertise.
There are already some executives from firms like JPMorgan and Goldman Sachs who quit Wall Street's cushy expense-account and chauffeured-car world for the less comfortable and predictable lifestyle of launching a new company.
Business Insider took a look at the 20 startups that are breaking down walls on Wall Street and pushing a new world order.
This means pushing into cryptocurrency, business, and consumer lending operations and trading floor technology among other businesses. Some are tiny, others are backed by hundreds of millions of dollars in investment capital - and sometimes, from big banks themselves.