The following video is from Monday's Investor Beat, in which host Alison Southwick and Motley Fool analysts Lyons George and Taylor Muckerman dissect the hardest-hitting investing stories of the day.

Amazon.com announced a new partnership with the U.S. Postal Service to provide online shoppers with Sunday delivery. In the lead story from Investor Beat, Taylor and Lyons discuss whether it's a smart move and why Amazon didn't choose UPS or FedEx.

Then the guys look at three stocks moving on Monday's market. Google is now delivering users' personal information in online ads. Carl Icahn is getting results at Transocean. And Apple rumors abound on the future of the iWatch, Apple TV, and bigger, curvier iPhones.

Finally, Lyons and Taylor explain why they're keeping a close watch on shares of MarkWest Energy and Sierra Wireless.

The changing face of retail
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Alison Southwick owns shares of Apple. Lyons George owns shares of Facebook. Taylor Muckerman has no position in any stocks mentioned. The Motley Fool recommends Amazon.com, Apple, Facebook, FedEx, Google, Netflix, Pandora Media, Sierra Wireless, and UPS and owns shares of Amazon.com, Apple, Facebook, Google, Netflix, Sierra Wireless, and Transocean. 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.