By far the largest Ponzi scheme was discovered in December 2008, when it appeared that well=-respected New York City financier Bernard L. Madoff had bilked investors worldwide out of vast sums, perhaps as much as %50 billion over a period of decades. | By far the largest Ponzi scheme was discovered in December 2008, when it appeared that well=-respected New York City financier Bernard L. Madoff had bilked investors worldwide out of vast sums, perhaps as much as %50 billion over a period of decades. |