<div><p>CHICAGO (Reuters) - The top executive of Citadel Investment Group's investment banking unit has left the firm, a company spokeswoman confirmed on Saturday.</p><p>Todd Kaplan, who joined the Chicago-based hedge fund firm in March as it launched its new investment banking business, resigned from the company on Friday, Citadel spokeswoman Katie Spring said.</p><p>Kaplan, a high-profile hire, had spent more than 20 years at Merrill Lynch before joining Citadel.</p><p>People from the investment banking unit who had reported to Kaplan will now report to Patrik Edsparr, global chief executive of Citadel Securities, the Wall Street Journal said.</p><p>(Reporting by Brad Dorfman, Editing by Sandra Maler)</p><img src="http://admatch-syndication.mochila.com/images/ad.gif?aid=67049045&bid=informcom" /></div><div id="copyright"><div>

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