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.

Dollar General's (NYSE:DG) first-quarter profits rose rose 3%, but the retailer cut guidance for the full year. Business market software maker ExactTarget (NYSE: ET) rose more than 50% after Salesforce.com (NYSE:CRM) agreed to buy the company for more than $2.3 billion. Zynga (NASDAQ:ZNGA) held firm after shares tanked on Monday in the wake of the company announcing it's cutting 18% of its staff. And IBM (NYSE:IBM) buys a company to better compete in the cloud computing space. In this installment of Investor Beat, our analysts discuss four stocks making big moves.

The relevant video segment can be found between 2:21 and 5:21.