The following video is from Tuesday's Investor Beat, in which host Chris Hill and analysts Jason Moser and Matt Koppenheffer dissect the hardest-hitting investing stories of the day.

Alcoa (NYSE:AA) reports a mixed bag of earnings. Barnes & Noble (NYSE:BKS) needs to find a new CEO. IBM (NYSE:IBM) gets a downgrade. And Intuitive Surgical (NASDAQ:ISRG) falls on a lowered forecast. In this installment of Investor Beat, Jason and Matt discuss four stocks making big moves today.

The relevant video segment can be found between 2:29 and 5:32.

Chris Hill, Jason Moser, and Matt Koppenheffer have no position in any stocks mentioned. The Motley Fool recommends Intuitive Surgical and owns shares of IBM and Intuitive Surgical. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.