14. James Paul Lewis Jr. - $311 million
Perhaps the most dangerous thing about Ponzi schemes is that they can take a long time to unravel. Oftentimes, it’s too late to find the culprit. Lewis Jr. almost got away with his plan, after running his monetary scam for more than 20 years.

Image source: twitter
In that period of time, he managed to steal $311 million. Currently, Lewis Jr. is in federal prison, but only $11 million has been returned to the victims. Nobody knows where this skilled scammer hid his stolen money.