Usa Cboe Trades On Nasdaq

  epa02203492 Chicago Board Options Exchange ChairmanCEO William Brodsky prepares to ring the opening bell on the floor of the exchange while surrounded by traderscompany officials in Chicago , Illinois , USA , 15 June 2010 . CBOE Holdings , the parent company of the Exchange , became a publicly traded company on the NASDAQ Stock Market .  EPA/TANNEN MAURY
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