In late December 2008, following the confession by New York investment advisor Bernard Madoff and the filing of SEC charges against him alleging a $50 billion fraud, Cox stated that he was "gravely concerned" that "specific and credible evidence" provided to the agency over a period of at least 10 years had not previously been referred to the Commission for commencement of a formal investigation. He ordered an internal investigation by the agency's Inspector General. The report found that substantive allegations concerning Madoff were first brought to the SEC in 1992.