Comcast shares rise after Trian Fund Management takes 0.4% stake

Comcast shares are up after activist investor Trian Fund Management took a stake in Comcast Corp. in a bet that the media company's stock is undervalued. Craig Moffett, MoffettNathanson founder and senior analyst, also has a buy on the stock. He joins 'Closing Bell' to talk about Comcast's outlook.
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Tue, Sep 22 20204:10 PM EDT