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

In today's edition, Apple (NASDAQ:AAPL) hits a 52-week low, despite a rally from Dow stocks today. Also, Groupon (NASDAQ:GRPN) pops after CEO Andrew Mason announces his resignation. These stories, plus three more of today's big market movers, and two stocks we'll be watching closely this week.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.