Hedge fund manager says this stock that’s already up 545% in 2021 is still undervalued

In this photo illustration an Upstart Holdings logo is seen on a smartphone screen.
Pavlo Gonchar | SOPA Images | LightRocket | Getty Images

Hedge fund manager Eric Jackson told CNBC on Tuesday he's still bullish on Upstart Holdings, even though shares of the artificial intelligence-based lending platform have already soared 545% in 2021.

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