The bookseller said it will launch a video service letting users buy and rent movies and shows on their mobile devices and TVs.

Vail Resorts Inc., up $4.34 at $57.07

The ski resort operator said that its fiscal fourth-quarter loss was essentially the same as a year ago as its revenue improved.

Red Hat Inc., down $2.46 at $55.08

The provider of the Linux open source operating system said that its second-quarter profit fell 14 percent, due to acquisitions.

Caterpillar Inc., down $3.86 at $87.01

The construction and mining equipment maker cut its 2015 profit outlook due to slower-than-expected growth in the global economy.

Nasdaq

Staples Inc., down 55 cents at $11.80

The office products retailer is speeding up the closure of about 15 U.S. stores and plans to close down 45 stores in Europe.

Tesla Motors Inc., down $3 at $27.66

The electric car company cut its full-year revenue prediction citing lower-than-expected deliveries of its new Model S sedan.

CH Robinson Worldwide Inc., up 48 cents at $59.05

The trucker said that it reached a deal to buy freight services company Phoenix International Inc. for about $635 million.

Paychex Inc., down 97 cents at $33.41

The payroll and benefits service provider said that its first-quarter net income rose 3 percent, but revenue missed expectations.