The following video is from Tuesday's Investor Beat, in which host Alison Southwick and Motley Fool analysts David Hanson and Mike Olsen dissect the hardest-hitting investing stories of the day.

In this segment from Investor Beat, Mike and David explain why they're keeping a close watch on shares of Panera Bread (NASDAQ:PNRA.DL) and Express Scripts (NASDAQ:ESRX).