Among the companies whose shares are expected to see active trade in Tuesday's session are Lennar Corp., Jabil Circuit Inc., Paychex Inc. and Pepsi Bottling Group Inc.

AngioDynamics Inc. (ANGO) is expected to report first-quarter earnings of 9 cents a share, according to analysts polled by Thomson First Call.

Manugistics Group's (MANU) second-quarter earnings are expected to show a per-share loss of 1 cent.

Paychex Inc. (PAYX) is expected to show a per-share profit of 28 cents in its first quarter

Pepsi Bottling Group Inc. (PBG) is seen posting third-quarter earnings of 78 cents a share.

After Monday's closing bell, Lennar Corp. (LEN) reported better-than-expected third-quarter profit and raised its full-year earnings forecast as the Miami-based homebuilder benefited from continued strength in the U.S. real estate market.

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Biogen Idec (BIIB) and partner Elan Pharmaceuticals (ELN) said they have filed for regulatory approval to have their recalled drug Tysabri put back on the market for the treatment of multiple sclerosis.

Integrated Device Technology (IDTI) said it has exercised an option to purchase Freescale Semiconductor Inc.'s (FSL) (FSL.B) timing solutions business for $35 million. IDT said the transaction was initiated by Integrated Circuit Systems before its acquisition by IDT. San Jose, Calif.-based IDT designs and manufactures semiconductor products.

Jabil Circuit Inc. (JBL) said fiscal fourth-quarter profit rose 59% as the contract manufacturer saw higher sales of the cell phones, networking equipment and electronic gear it makes for other companies.

Lowe's Cos. Inc. (LOW) said it plans to reaffirm its third-quarter earnings forecast of 76 cents to 78 cents a share on same-store sales growth of 4% to 6% at a meeting with analysts and investors on Tuesday in Chicago. The home-improvement retailer also said it will reaffirm its 2005 earnings forecast of $3.31 to $3.37 a share on same-store sales growth of 5%. The company plans to open 150 stores in 2005, and an additional 150 to 160 stores in both 2006 and 2007; Lowe's expects the new stores to increase sales 13% to 14% in 2006, and an additional 14% to 15% in 2007. It also sees earnings per share growing 17% to 20% in 2006, and 16% to 20% in 2007.

Openwave Systems Inc. (OPWV) said it has agreed to acquire Musiwave for 99.5 million euros ($121 million), plus a contingent earnout of up to 15 million euros ($18 million.) The deal is for cash and stock, with at least 40% of the payments in cash. Openwave expects the acquisition to add to its earnings in 2006, and to contribute $50 million to $55 million in revenue. Redwood City, Calif.-based Openwave, a provider of software and services for the communications industry, expects the deal to close late in the fourth quarter. Musiwave supplies music entertainment services, applications and content.

Quest Diagnostics Inc. (DGX) has received a subpoena from the New York office of the Department of Health and Human Services, according to a regulatory filing with the Securities and Exchange Commission. The laboratory testing services provider said the subpoena seeks various documents, including those related to its relationship with health maintenance organizations, independent physician associations, group purchasing organizations and preferred provider organizations from 1995 to the present. Quest said it's cooperating with the agency's investigation.

Regis Corp. (RGS) said it expects first-quarter results to come in below the low-end of its forecast for earnings of 51 cents to 56 cents a share. The hair care services provider cited the impact of Hurricanes Katrina and Rita as well as softer-than-expected same-store sales at its international operations as reasons for the lowered outlook.

Sonic Solutions (SNIC) named President and Chief Operating Officer Dave Habiger chief executive. Founder and CEO Bob Doris will become non-executive chairman for the digital media software provider.

Tyson Foods Inc. (TSN) said that Hurricane Rita's impact on its Texas operations was minimal and it doesn't expect the limited damage and business interruption to materially impact its earnings.

Union Pacific Corp. (UNP) said that third-quarter operating income could be reduced by $25 million due to Hurricane Rita. The railroad also said it expects earnings to come in at the mid-to-lower end of its previous forecast of 88 cents to 98 cents a share. The railroad said that prior to Rita, its financial performance had been trending near the high end of the forecast. Union Pacific said it suffered no catastrophic damage to its track structure, bridges or yards due to Rita.