Among the companies whose shares are expected to actively trade in Tuesday's session are Insight Enterprises Inc. (NSIT), Ultra Clean Holdings (UCTT) and Masco Corp. (MAS).

Insight Enterprises' fourth-quarter earnings surged 39% as the informational technology services company reported sharply higher sales in its Asia Pacific region. Shares were up 14% at $21.65 as the company easily beat earnings expectations and forecast upbeat 2012 income.

Ultra Clean's fourth-quarter earnings more than doubled after a tax benefit, though the supplier for original equipment manufacturers in the semiconductor, flat panel and other industries saw its revenue hurt by weak demand. Shares jumped 17% to $9.10 after hours.

Masco's fourth-quarter loss narrowed as the building-products maker reported lower impairment charges as well as an income tax benefit, though the company's sales grew less-than-expected. Shares fell 4.8% to $12.60 as Masco's adjusted loss also missed analyst expectations.

DuPont Co. (DD) and Yingli Green Energy Holding Co. Ltd.'s (YGE) China subsidiary signed a $100 million deal to help increase the supply of photovoltaic materials for the adoption of solar energy. Yingli's American depositary shares rose 5.9% to $5.60, while Dupont was unchanged at $50.60 after hours.

Charles River Laboratories International Inc. (CRL) swung to a fourth-quarter profit following prior-year write-downs of $395 million mostly related to its preclinical-services business. Shares of the drug-research services provider rose 2.7% to $34.80 in after-hours trading as the latest results exceeded analysts' expectations.

Rackspace Hosting Inc.'s (RAX) fourth-quarter profit rose 85% as the company posted improved revenue and a larger customer base. Shares jumped 6.9% to $52.60 in after-hours trading as results beat analyst expectations.

Limelight Networks Inc.'s (LLNW) fourth-quarter loss widened slightly as the software-services company posted higher expenses, though revenue rose. Shares rose 3.8% to $4.15 in after-hours trading as the company's adjusted loss was better than analysts had expected.

Calgon Carbon Corp. (CCC) said it expects its fourth-quarter revenue to miss analyst expectations and said its earnings for the quarter will be hurt by a slew of charges. Shares of the company, which makes activated carbons and purification systems, slipped 3.7% to $15.76.

Health Management Associates Inc.'s (HMA) fourth-quarter earnings grew a stronger-than-expected 9.5% as the hospital operator generated more revenue per admission. Shares rose 5.1% to $7.25 after hours.

Biopharmaceutical firm Alnylam Pharmaceuticals Inc. (ALNY) said it would sell 7 million shares. Shares were down 5.4% at $11.72 after hours.

 
Watch List: 
 

FIS Inc.'s (FIS) fourth-quarter earnings rose 5.8% as the financial services company reported improved revenue in all three major segments, led by international solutions.

The U.S. Food and Drug Administration granted Gilead Sciences Inc.'s (GILD) antiretroviral drug Truvada a priority-review schedule, advancing what could become the first treatment labeled for HIV prevention.

Standard & Poor's Ratings Services raised its outlook on Meritor Inc. (MTOR) to positive from stable, citing expectations of sales growth in 2012.

Raymond James Financial Inc. (RJF) said it plans to sell 10.5 million shares, including one million shares offered by selling stockholders, to help fund its acquisition of brokerage Morgan Keegan & Co.

Western Union Co. (WU) unveiled a proposal to declassify its board structure and said it won't submit a management proposal for proxy access at its 2012 annual meeting.

-Edited by Corrie Driebusch and Drew FitzGerald; write to corrie.driebusch@dowjones.com and andrew.fitzgerald@dowjones.com

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