Among the companies with shares expected to actively trade in Wednesday's session are YRC Worldwide Inc. (YRCW), Potbelly Corp. (PBPB), RealD Inc. (RLD) and MagicJack VocalTec Ltd. (CALL).

YRC Worldwide swung to a third-quarter loss as the trucking company's results were strung by driver shortages and higher expenses, offsetting higher revenue from the regional transportation segment. Shares slumped 30% to $6.86 in after-hours trading, as results for the period missed expectations.

Potbelly's third-quarter profit slid 15% as higher expenses more than offset a jump in revenue--the first quarterly results the sandwich chain unveiled since debuting on the public market last month. Shares jumped 14% to $30.85, as Potbelly's adjusted profit for the quarter exceeded expectations.

RealD posted a wider loss in its fiscal second quarter, with a drop in revenue at the 3D cinema specialist obscuring a decline in costs and wider margins. But shares of RealD were up 20% at $8.39 after hours as the company's results beat expectations.

MagicJack has repurchased $13 million in shares held by founder Daniel Borislow, who in turn agreed to end any further involvement with the beleaguered Internet-phone company's operations. Investors cheered the news, sending shares up 15% to $13.35 in recent after-hours trading.

Sina Corp.'s (SINA) third-quarter profit more than doubled, while the Chinese Internet company's social-media platform, Weibo, continued to post revenue growth. Shares of Sina were up 4.1% at $79 in after-hours trading Tuesday as the company's third-quarter earnings and fourth-quarter revenue guidance surpassed Wall Street expectations.

 
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Greek shipping-fuel supplier Aegean Marine Petroleum Network Inc. (ANW) agreed to pay $30 million to acquire Hess Corp.'s (HES) East Coast bunkering operations, a deal to launch an entry into the U.S. market.

Babcock & Wilcox Co.'s (BWC) third-quarter profit grew 18% as a drop in expenses helped to mask a decrease in revenue. The company, which provides energy technology and services, narrowed its full-year adjusted earnings outlook.

Eastman Kodak Co. (KODK) swung to a profit in the company's first report since exiting bankruptcy protection due to benefits related to its reorganization and discontinued operations. However, excluding those items, the company posted a loss, albeit narrower than the one it posted in the year-earlier period.

KCG Holdings Inc. (KCG) restated its third-quarter results to include a one-time, noncash gain of $128 million from Getco LLC's $1.4 billion acquisition of Knight Capital Group Inc.

MarkWest Energy Partners LP's (MWE) third-quarter loss widened due to higher expenses and a bigger tax provision, masking a gain in revenue.

MBIA Inc.'s (MBI) third-quarter earnings surged as the bond insurer benefited from derivative-related gains that offset declines in net premiums written, as well as some large expenses and write-downs.

An arbitrator awarded Mondelez International Inc. (MDLZ) $2.23 billion in damages in a long-running dispute with Starbucks Corp. (SBUX) over the coffee chain's decision to reclaim the distribution of its bagged-coffee business in 2011.

Office Depot Inc. (ODP) has named an outsider, former Wendy's Co. (WEN) chief executive Roland Smith, to lead the office retailer that just last week closed on its $1.2 billion merger with peer OfficeMax.

Wynn Resorts Ltd. (WYNN) said on Tuesday the U.S. Department of Justice has been conducting a criminal investigation into the casino operator's donation to the University of Macau Development Foundation.

Yum Brands Inc.'s (YUM) same-store sales in China fell an estimated 5% during October as the company continues to report declines at its KFC China operations.

Write to John Kell at john.kell@wsj.com

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