The following video is from Monday's edition of Investor Beat, in which host Chris Hill and Motley Fool analysts Jason Moser and Bill Barker dissect the hardest-hitting investing stories of the day.

Apple shattered all sales estimates for the debut weekend of its iPhone 5s and 5c models, selling 9 million devices. Meanwhile, BlackBerry is due to be bought out, by a group led by Fairfax Financial. In the lead story on today's Investor Beat, Jason and Bill discuss the future of BlackBerry, and whether Apple is a buy today.

The guys also discuss four stocks making moves on the market today. Netflix shares pulled back today, despite an Emmy award for Best Director for the service's original series House of Cards. Pandora shares fell on news that Apple has more than 11 million listeners in its new iTunes Radio service. Shares of Green Mountain Coffee Roasters were down amid heavy trading volume. And shares of Zillow pulled back today, also in heavier-than-usual volume.

Finally, Jason and Bill tell investors why they're going to be watching shares of AutoZone and Carnival 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.