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.

Apple's iPad Mini with Retina display is now on sale. While the device and its higher-resolution 7.9-inch screen have gotten good reviews, some have speculated that the delayed release date was due to supply constraints, a factor that may continue to plague sales numbers through the holidays. In the lead story on today's Investor Beat, Michael and Evan discuss Apple's potential supply issues and talk about what it's going to take to finally push Apple shares higher for shareholders.

Then the guys look at four stocks moving on the market today. US Airways Group was up slightly after getting the green light to merge with American Airlines, a merger that the Justice Department had previously blocked. Shares of DISH Network hit a 52-week high after third-quarter results came in better than expected. Jos. A. Bank announces earnings in two weeks, but shares are on the rise after the retailer increased guidance for the third quarter. And Rackspace fell hard after reporting third-quarter results, with profits down 40% and expenses up 24%.

Finally, Michael and Evan tell investors why they're going to be watching shares of Weight Watchers International and T-Mobile US very closely this week.