The following video is from Tuesday's Investor Beat, in which host Chris Hill and Motley Fool analysts Michael Olsen and Evan Niu dissect the hardest-hitting investing stories of the day for Foolish investors.

In this segment, Michael and Evan tell investors why they're going to be watching shares of Weight Watchers International (NASDAQ:WW) and T-Mobile US (NASDAQ:TMUS) very 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.