Among the companies whose shares are expected to see active trade in Tuesday's session are Albertson's Inc., McData Corp. and Semtech Corp. U.S. markets were closed Monday in observance of Memorial Day.

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Albertson's (ABS) is expected to report first-quarter per-share income of 25 cents, according to analysts surveyed by Thomson First Call.

Layne Christensen Co. (LAYN) may report first-quarter earnings per share of 30 cents, according the single analyst surveyed by Thomson.

McData (MCDTA) is expected to post per-share income for the first quarter of 4 cents.

Semtech (SMTC) is seen reporting 18 cents for first-quarter earnings per share.

Vodafone Group Plc (VOD) is expected to post annual per-share income of $1.95.

On Friday, CBS Corp. (CBS) said Sirius Satellite Radio Inc. (SIRI) has agreed to pay $2 million as part of a settlement of a breach of contract lawsuit CBS had filed against the satellite-radio company and shock jock Howard Stern. See full story.See After Hours column.

Watch list

Power Integrations Inc. (POWI) said it has received notice from the Nasdaq that the company is not in compliance with filing rules. The power conversion products supplier has yet to file its report for the quarter ended March 31.

Sovereign Bancorp Inc. (SOV) said the company and Banco Santander Central Hispano S.A. (STD) have received all required regulatory approvals to complete Santander's $2.4 billion investment in Sovereign and Sovereign's acquisition of Independence Community Bank Corp. (ICBC).