Shares of the following companies may have unusual moves in U.S. trading on March 26. Stock symbols are in parentheses, and prices are as of 4:55 p.m. in New York.
Armstrong World Industries Inc. (AWI) rose 2.9 percent to $58.47. The maker of floors, ceilings and cabinets said it would pay a special cash dividend of $8.55 a share.
Citigroup Inc. (C US): The third-largest U.S. bank expects an impairment charge of $700 million as the lender reduces an investment in Istanbul-based Akbank TAS. The sum is about $1.1 billion before taxes, the New York-based lender said in a filing with federal regulators.
Verisk Analytics Inc. (VRSK) : The Jersey City, New Jersey-based information services company will buy MediConnect Global Inc., a provider of systems and services for medical- record analysis, for $348.6 million.
Weatherford International Ltd. (WFT) rose 2.5 percent to $17.05. The oilfield-services and equipment provider named John Briscoe, who joined the Geneva, Switzerland-based company in August, as chief financial officer.
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