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Economic slowdowns and market turmoil could hurt the company's sales.

There are no hard-and-fast rules, so companies have to decide for themselves.

The retailer is giving up a cut of device sales in a plot to rule streaming media.

If you're an early adopter, the free ride ends next week.

Revenue from services like Spotify are offsetting the slide in digital downloads.

Here are the numbers we're reading and watching for Friday.

The philanthropist talks about her $50 million Super School project.

Apple's operating system could change the equation for consumers and competitors.

Tim Cook unveils the set-top box, a souped-up iPhone 6 and the next-gen iPad.

Microsoft, Apple fight in court to protect emails abroad and mobile devices.