Walgreen Co., down $1.24 at $36.31
The drugstore chain said that its first-quarter earnings fell nearly 26 percent as Superstorm Sandy hurt its performance.
Nike Inc., up $6.10 at $105.10
The athletic gear maker said that strong demand in North America helped it post second-quarter net income that beat expectations.
Red Hat Inc., up $2.38 at $54.99
The software company posted solid third-quarter results and said that it plans to acquire cloud-based software company ManageIQ.
Pinnacle Entertainment Inc., up $2.85 at $16.20
The casino owner said that it will buy rival Ameristar Casinos Inc. for about $869 million. The deal will double Pinnacle's size.
Mohawk Industries Inc., up $4.25 at $91.29
The maker of residential and commercial flooring, is buying Marazzi Group for $1.5 billion to expand its ceramic tile business.
Quanex Building Products Corp., down $1.87 at $20.32
The construction materials maker said that net income in its fiscal fourth quarter dropped more than 84 percent as costs rose.
Research In Motion Ltd., down $3.21 at $10.91
The BlackBerry maker said that it lost subscribers for the first time in the latest quarter. The number of users fell below 79 million.
Halozyme Therapeutics Inc., up $1.49 at $7.01
The biopharmaceutical company said that it reached a deal with Pfizer Inc. to develop injectable versions of its biotech drugs.