Among the companies whose shares are expected to see active trading in Monday's session are Eaton Corp., Mattel Inc., and Novellus Systems Inc.

Eaton (ETN) is expected to report second-quarter earnings of $1.47 a share, according to a survey of analysts by Thomson Financial.

JB Hunt Transportation Inc. (JBHT) is expected to post earnings of 38 cents a share for the second quarter.

Mattel (MAT) is expected to report second-quarter earnings of 11 cents a share.

Merix Corp. (MERX) is expected to post earnings of 3 cents a share for the fourth quarter.

Novellus Systems (NVLS) is expected to report second-quarter earnings of 44 cents a share.

Universal Forest Products Inc. (UFPI) is expected to post earnings of 93 cents a share for the second quarter.

W.W. Grainger Inc. (GWW) is expected to report second-quarter earnings of $1.19 a share.

After Friday's closing bell, the Securities and Exchange Commission has opened an informal inquiry into Whole Foods Market Inc. (WFMI) Chief Executive John Mackey's anonymous posts to Internet message boards, according to a report Friday on The Wall Street Journal's Web site. See full story.

Also, Boston Scientific Corp. (BSX) said it has agreed to pay $195 million to settle claims associated with a series of product communications issued by Guidant Corp., which the company bought last year. See full story.

Watch list

Cerner Corp. (CERN) Chief Operating Officer Paul Black intends to retire, effective Aug. 31. The Kansas City, Mo., provider of healthcare information technology said it doesn't have plans to name a replacement. Vice President Bill Wing will be primarily responsible for its Health Employer Services initiatives, while Bill Miller will be primarily responsible for DeviceWorks, the company said.

Odyssey Re Holdings Corp. (ORH) said it has entered into a five-year, $200 million credit facility with a syndicate of lenders. The Stamford, Conn.-based reinsurer said the credit facility replaces its existing three-year, $150 million facility, which was entered into in September 2005.

Sun-Times Media Group Inc. (SVN) stated that, following the fraud convictions of four former officers, it intends to proceed with a civil suit against its controlling shareholders and certain former officers and directors as soon as possible. The Chicago-based media company said a special committee of the board has already recovered about $185 million from judgments against and settlements with former officers and directors. See related story.

Stillwater Mining Co. (SWC) said it reached a tentative agreement with the United Steel Workers International union on the terms of a new labor agreement at the Stillwater mine and processing facilities. Stillwater, a Columbus, Mont., mining company, said the union's negotiating committee unanimously recommended ratification of the tentative agreement and members of United Steel Workers Local 11-001 will vote Monday. Upon ratification, Stillwater said, the first scheduled shift would be the swing shift Tuesday.