Television ratings company Nielsen Holdings NV has announced plans to sell its expositions operations for $950 million in preparation for its buyout of Arbitron Inc., a radio rater. Nielsen, based in the Netherlands, will sell its California-based expositions business to Onex Corp. Onex confirmed the news with an announcement of plans to invest about $350 million in equity into the deal; the parties expect to finalize the deal within this quarter. Nielsen Expositions produces business-to-business trade shows.
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