Among the companies whose shares are expected to actively trade in Wednesday's session are Walt Disney Co. (DIS), Time Warner Inc. (TWX) and CVS Caremark Corp. (CVS).

Disney's fiscal first-quarter profit rose a stronger-than-expected 12%, helped by revised contracts with broadcast affiliates and higher customer spending and attendance at its theme parks. Shares slipped 1.4% to $40.40 premarket, however, as revenue missed Street expectations.

Time Warner's fourth-quarter earnings edged up 0.5% as the media giant reported stronger profits in its networks and publishing businesses and unveiled a $4 billion share repurchase program. Shares were up 1.6% to $38.70 in premarket trade as the company also reported core earnings that easily exceeded analyst expectations.

CVS Caremark's fourth-quarter profit rose 3.7% as pharmacy services and retail revenue each grew, though results were hurt by the increased number of generic products that are hitting the market. Still, shares gained 2.1% to $43.98 premarket as the company raised its full-year earnings guidance on anticipation of a greater-than-expected benefit from business being driven away from rival Walgreen Co. (WAG) due to its impasse with pharmacy-benefits manager Express Scripts Inc. (ESRX).

Cognizant Technology Solutions Corp.'s (CTSH) fourth-quarter earnings rose 16% with help from a double-digit jump in revenue and steady margins. But shares slipped 2.9% to $69.90 premarket as revenue fell short of analysts' expectations.

Agrium Inc. (AGU) more than doubled earnings from continuing operations in its latest fourth quarter, besting both the fertilizer company's own and analyst expectations. Shares climbed 3.7% to $84.20 premarket.

Ingersoll-Rand PLC's (IR) fourth-quarter earnings rose 14% on a tax benefit and stronger margins, though shares fell 1.5% to $37 premarket as revenue declined at most of the diversified manufacturer's main businesses.

Lincoln National Corp.'s (LNC) swung to a loss in the fourth quarter as impairment charges weighed on the life-insurance and annuity company's bottom-line, though its core operating earnings improved. Shares fell 2.6% to $23.20 premarket.

Teekay Tankers Ltd. (TNK) said it plans to offer 15 million shares of its Class A stock to help repay debt, pushing the shares down 13% to $3.96 premarket. Triangle Capital Corp. (TCAP) planned to offer 3.7 million shares, sending its shares down 2.3% premarket to $18.90. Cardica Inc. (CRDC) said it intends to make an offering, but didn't specify the amount, and PMFG Inc. (PMFG) was offering 2.6 million shares to repay borrowing.

 
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Alere Inc.'s (ALR) fourth-quarter loss narrowed as the health-care products company posted sharply smaller write-downs related to its health-management business. The results topped expectations.

Apartment Investment & Management Co.'s (AIV) fourth-quarter loss narrowed as higher rents helped improve the real-estate investment trust's margins.

Atmos Energy Corp.'s (ATO) fiscal first-quarter profit fell 7.4% as the natural-gas utility reported higher operating expenses and weaker gross profit from its nonregulated segment, but its regulated unit's profit grew.

BHP Billiton Ltd. (BHP) Wednesday posted a 5.5% fall in profit for the first half of its financial year, and said it expects volatility in commodity markets to persist as Europe's sovereign debt crisis and general weakness in manufacturing and construction across key markets weigh on sentiment.

CBRE Group Inc.'s (CBG) fourth-quarter profit fell 16% as the commercial real-estate brokerage recorded lower leasing revenue from the Americas and as margins narrowed. However, adjusted earnings topped analyst expectations.

Cerner Corp.'s (CERN) fourth-quarter earnings rose 29% as the hospital information-technology vendor reported double-digit sales growth and a sharp increase in bookings.

Cliffs Natural Resources Inc. (CLF) said it will dissolve its Michigan iron nuggets joint venture with Kobe Steel (KBSTY) as coal and iron-ore producer Cliffs looks to focus on its core business.

Computer Sciences Corp. (CSC) named the head of a U.K.-based information-technology company, Mike Lawrie, as its new president and chief executive, succeeding Michael W. Laphen, who previously announced plans to retire.

Coventry Health Care Inc.'s (CVH) fourth-quarter earnings fell 43% as the managed-care company's enrollment declined, though revenue increased more than expected.

Genesee & Wyoming Inc.'s (GWR) fourth-quarter earnings rose 67% as revenue continued to grow despite North America and Australia operations underperforming the transportation company's expectations.

Harley-Davidson Inc.'s (HOG) board named President and Chief Executive Keith E. Wandell as its new chairman, effective immediately, while also raising the motorcycle company's quarterly dividend by 24%.

Hartford Financial Services Group Inc.'s (HIG) fourth-quarter earnings fell 79% amid sharply higher net capital losses and weaker revenue at the insurance and investment company. However, core earnings exceeded expectations.

Healthcare Services Group Inc.'s (HCSG) fourth-quarter earnings rose 16% as the nursing-home housekeeping and food-service provider reported better-than-expected revenue growth.

Hhgregg Inc.'s (HGG) fiscal third-quarter earnings declined 16% despite a jump in sales as heavy industry-wide promotions for televisions weighed heavily on the retailer's margins.

Gene-sequencing company Illumina Inc. (ILMN) unanimously rejected a takeover bid from drug maker Roche Holding AG (ROG.VX, RHHBY) calling the Swiss company's offer inadequate.

Jones Group Inc. (JNY) narrowed its fourth-quarter loss, with the apparel marketer's revenue edging up and input costs showing a decline.

Level 3 Communications Inc.'s (LVLT) fourth-quarter loss narrowed amid sharply higher revenue thanks to its Global Crossing acquisition, as well as a gain related to the network-services company's recent sale of its coal-mining business.

Panera Bread Co.'s (PNRA) fourth-quarter earnings rose 5.8% as the bakery-cafe chain saw both corporate-owned and franchise same-store sales growth. The company missed revenue expectations and margins dropped.

Plains All American Pipeline LP (PAA) said it will construct a new 170-mile pipeline in northern Oklahoma and southern Kansas, a project it said will provide needed capacity for increasing crude oil production in the Mississippian Lime play.

Ralcorp Holdings Inc.'s (RAH) fiscal first-quarter earnings fell 8.4% as mark-to-market losses on economic hedges and other charges weighed on the food maker's bottom-line results, though revenue grew more than expected.

Regency Centers Corp. (REG) dialed back its projections for a real-estate profitability metric after the property owner's new set of preferred shares priced.

RenaissanceRe Holdings Ltd.'s (RNR) fourth-quarter earnings sank 32%, as its combined ratio rose due in part to Thailand flooding, though revenue rose.

Reynolds American Inc.'s (RAI) fourth-quarter earnings rose 16% though declining cigarette volume contributed to the tobacco company's lower-than-expected revenue.

Silicon Graphics International Corp. (SGI) swung to a fiscal second-quarter loss, as the computer-products company reported higher operating expenses, though revenue increased. The company badly missed core earnings expectations.

Software-provider Solera Holdings Inc.'s (SLH) fiscal second-quarter profit fell 8.7% as costs tied to recent acquisitions overshadowed higher revenue from insurance providers.

Sprint Nextel Corp.'s (S) fourth-quarter loss widened on asset-impairment charges, though the wireless carrier's revenue rose more than expected thanks to subscriber growth.

-Edited by Ian Thomson and Maya Pope-Chappell; write to ian.thomson@dowjones.com and maya.pope-chappell@dowjones.com