Retail investing is booming. Here's what Wall Street is expected to do with 10 million new members

The Robinhood app on IOS and Android 
Source: Robinhood

(This story is for CNBC Pro subscribers only.)

2020 was a red hot time for the retail investing industry, but 2021 could bring another solid year as traders stick around after the pandemic.

Retail trading just wrapped up a record year in 2020, as unprecedented market volatility and Covid-19 lockdowns created a unique opportunity for regular investors to play stocks' unlikely but epic comeback.

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