To a small group of pump-and-dump traders with no scruples, Jordan Belfort—the poster-child for the ‘Wolf of Wall Street’—is an idol; to most others, including the judge in his case, he’s a deadbeat who’s only paid a small fraction of the tens of millions he owes his victims in restitution. Belfort is famous for being played by Leonardo DiCaprio in The Wolf of Wall Street—the already iconic 2013 film that definitively introduced us to the boiler-room beasts, and the over-the-top pump-and-dump schemers that are a black stain on the trading floor. And Wednesday, during a garnishment hearing in New York...