Among the companies whose shares are expected to see active trade in Thursday's session are Symantec Corp., Sanmina-SCI Corp. and LSI Logic Corp.

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Aetna Inc. (AET) is expected to report earnings per share of 64 cents for the second quarter, according to analysts polled by Thomson First Call.

Boston Scientific Corp. (BSX) is expected to post per-share income of 17 cents for the second quarter.

Coca-Cola Enterprises Inc. (CCE) is expected to report earnings per share of 55 cents for the second quarter.

ExxonMobil Corp. (XOM) is expected to post per-share earnings of $1.64 for the second quarter.

Kellogg Co. (K) is expected to report per-share income for the second quarter of 65 cents.

McAfee Inc. (MFE) is expected to post earnings per share for the second quarter of 31 cents.

Northrop Grumman Corp. (NOC) is expected to report second-quarter per-share income of $1.08.

NYSE Group (NYX) is expected to post earnings per share of 35 cents for the second quarter.

Standard Pacific Corp. (SPF) is expected to report second-quarter per-share earnings of $1.35.

After Wednesday's closing bell, Symantec shares rose 7 percent following the company's report that quarterly results came in stronger than expected and the storage- and security-software firm offered a financial forecast that topped Wall Street's expectations.

Sanmina-SCI (SANM) reported a 4 percent decrease in its fiscal third-quarter revenue and said it would give no further financial details about the business period until it completes an internal investigation into the granting of company stock options.

LSI Logic (LSI) reported that its second-quarter net income more than doubled, helped by demand for its storage chips and by asset sales.

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Airgas Inc. (ARG) , a leading maker of industrial, medical and specialty gases, said its first-quarter profit surged 30 percent as acquisitions and demand for its core products triggered strong sales growth.

Akamai Technologies Inc. (AKAM) reported second-quarter net income fell 28 percent despite stronger than expected sales of its content-delivery services.

Amerigroup Corp. (AGP) said its second-quarter profit fell more than 32 percent, weighed down by higher selling, general and administrative expenses.

Restaurant operator Applebee's International Inc. (APPB) posted a nearly 26 percent drop in second-quarter profit, hurt by economic weakness that kept diners at home.

Baidu.com Inc. (BIDU) reported net earnings of 58.5 million yuan ($7.33 million), or 1.69 yuan (21 cents), compared with 12.1 million yuan, or 0.39 yuan, in the same period last year.

Boston Properties Inc. (BXP) said second-quarter net income jumped as gains on real estate sales rose.

Business Objects S.A. (BOBJ) reported second-quarter net earnings of $7.94 million, or 8 cents a share, compared with $23.1 million, or 25 cents a share, in the same period last year, as expenses grew.

Callaway Golf Co. (ELY) said second-quarter sales rose as net income increased to $22.5 million, or 33 cents a share, from $18.4 million, or 27 cents a share, during the same period in the prior year.

Cephalon Inc. (CEPH) said it expects its second-quarter results to come in ahead of its previous expectations due to strong sales of two of its Provigil drugs.

Cigna Corp. (CI) said its board increased the company's stock buyback program by $500 million, and the Philadelphia-based provider of employee benefits said it is now allowed to repurchase $790 million in shares.

Cintas Corp. (CTAS) said its board has approved expanding the company's share buyback program by $500 million. The total authorization is $1 billion.

Diagnostic Products Corp. (DP) said plaintiffs in a pending shareholder derivative suit have filed a first amended complaint that challenges the company's proposed acquisition by a unit of Siemens AG (SI) for $1.86 billion.

Duke Realty Corp. (DRE) reported second-quarter net earnings of $23.9 million, or 16 cents a share, compared with $44.1 million, or 28 cents a share, in the same period last year. Analysts had expected per-share earnings of 14 cents.

Express Scripts Inc. (ESRX) reported higher second-quarter results, helped by the promotion of lower-cost generic drugs.

Furniture Brands International Inc. (FBN) said second-quarter net income rose, as revenue increased, to $17 million, or 35 cents a share, from $9.59 million, or 18 cents a share, during the same period in the prior year.

A heavy one-time legal charge linked to cleanup costs at an Arkansas superfund site tipped Hercules Inc. (HPC) into a loss for the second quarter.

Johnson Controls Inc. (JCI) said it has appointed Keith Wandell to the additional roles of president and chief operating officer. Wandell was named an executive vice president in 2005 and president of the automotive group in 2003.

Komag Inc. (KOMG) reported a second-quarter profit that rose almost 35 percent from a year ago as the maker of hard disks for personal computers and other devices shipped more than 36 million disks during its latest business period.

Meritage Homes Corp. (MTH) said second-quarter closing revenue rose as net income increased to $77.1 million, or $2.82 a share, from $59.2 million, or $2.05 a share, during the same period in the prior year.

Pulte Homes Inc. (PHM) said profit slipped 20 percent from the year-ago period as the company navigates a decelerating U.S. housing market.

Ruth's Chris Steak House Inc. (RUTH) said its second-quarter profit more than tripled from the prior year on lower expenses and revenue from three new restaurants, as well as the absence of hurricane-related costs and other items that impacted year-ago results.

Skechers USA Inc. (SKX) said second-quarter sales rose as net income increased to $17.6 million, or 40 cents a share, from $15.9 million, or 38 cents a share, during the same period in the prior year.

Stats Chippac Ltd. (STTS) said the company swung to second-quarter net income of $18 million — a penny per ordinary share or 9 cents per American Depositary Share. During the same period in the prior year, the company reported a net loss of $15.1 million — a penny per ordinary share or 8 cents per ADS.

Trident Microsystems Inc. (TRID) reported its sales soared 150 percent to $52.2 million in its fiscal fourth quarter ended June 30. Trident Micro, a maker of TV chips for flat-screen TVs, didn't report net income data due to its pending review of its accounting for stock-option grants.

XL Capital (XL) reported a jump in second-quarter net income as the insurance and reinsurance company avoided big catastrophe losses.

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