Billionaire And Glencore Plc Chief Executive Officer Ivan Glasenberg [Getty Images]

FILE PHOTO: Ivan Glasenberg, chief executive officer of Glencore International Plc, pauses during a session on the opening day of the Russia Forum, organized by Sberbank, in Moscow, Russia, on Thursday, April 18, 2013. Glencore Plc faces a quasi-Lehman moment, where rumors about the companys viability are hurting the stock amid a lack of information from its leadership, Legal & General Group Plc Chief Executive Officer Nigel Wilson said Tuesday. Photographer: Andrey Rudakov/Bloomberg via Getty Images

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