Among the companies with shares expected to actively trade in Wednesday's session are Bank of America Corp. (BAC), Chelsea Therapeutics International Ltd. (CHTP) and NuVasive Inc. (NUVA).

Aeropostale Inc. (ARO) has contacted at least two private equity firms to gauge interest in a potential sale, Bloomberg News reported Tuesday, citing people with knowledge of the matter. The company isn't currently in negotiations for a sale, the people told Bloomberg. Shares rose 5.4% to $8.15 premarket.

Bank of America's fourth-quarter profit surged, beating analyst estimates, as the banking giant bounced back from a year-ago weighed down by one-time charges, while the bank benefited from stronger credit quality. The company logged large litigation expenses but was helped by a narrower loss in its consumer real estate division. Shares edged up 2.3% to $17.15 premarket.

Chelsea Therapeutics's blood-pressure drug Northera received strong support from a U.S. Food and Drug Administration advisory panel, raising prospects it will receive approval from regulators. Shares more than doubled to $6 premarket.

Datalink Corp. (DTLK), a provider of data-center infrastructure and service, boosted its fourth-quarter earnings outlook amid expectations that its revenue will be stronger than previously anticipated. Shares surged 31% to $14.20 premarket.

ExOne Co. (XONE) lowered its revenue guidance for the year amid a delay in completed sales for some of its 3-D printers. Shares dropped 16% to $52.57 premarket.

Medical device company NuVasive raised its revenue expectations for 2013, saying its growth outperformed the broader spine market. Shares climbed 8.1% to $36.50 premarket.

PetSmart Inc. (PETM) said it won't replace the chief operating officer position after the retirement of Joseph O'Leary this year, a move that mirrors a growing trend among U.S. corporations. Shares dropped 3.1% to $65 premarket.

 
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Fastenal Co. (FAST) said its sales and margins trends continued to weaken in the fourth quarter after it warned of the trend earlier in December. "This weakening was worse than we expected and this created additional drain on our ability to grow earnings," Fastenal said.

General Motors Co. (GM) has announced it will pay a 30-cent quarterly dividend, marking one of the final financial acts by Chief Executive Dan Akerson, who leaves office at midnight Wednesday. The company also said it expects its total earnings before interest and tax to be modestly improved this year, with its underlying operating performance more than offsetting increased restructuring expense.

Medical device company HeartWare International Inc. (HTWR) issued a revenue forecast that fell short of market expectations.

Intrepid Potash Inc. (IPI), the largest potash producer in the U.S., plans to cut its workforce by 7% and cut executive compensation as part of a plan to trim costs in reaction to weaker prices for the fertilizer ingredient.

Kaiser Aluminum Corp.'s (KALU) board raised the quarterly dividend by 17% and also authorized an additional $75 million in stock buybacks.

Linear Technology Corp.'s (LLTC) fiscal second-quarter profit climbed 18% as the chip manufacturer reported higher sales and gross margins.

MeadWestvaco Corp. (MWV) expanded its cost-cutting efforts and said it plans to simplify the structure of its packaging businesses, as it strives to improve its performance.

Verisk Analytics Inc. (VRSK) agreed to acquire EagleView Technology Corp. for $637 million, a move the company expects will enhance its position in the imagery analytics market.

Write to Lauren Pollock at lauren.pollock@wsj.com and John Kell at john.kell@wsj.com

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