Alpha magazine is out with its annual "rich list" detailing the successes of the highest earning hedge fund managers in America. The news once again is that it's good to be a successful hedge fund manager: the top 25 earned a collective $21.1 billion this year.

Even within that group there's considerable inequality. The top earner, David Tepper, took home $3.5 billion which is about five times as much as either of the two men tied for the tenth slot.

How does that look in context? Well, it's about 0.13 percent of total national income for 2013 being earned by something like 0.00000008 percent of the American population. Another way of looking at it is that this is about 2.5 times the income of every kindergarten teacher in the country combined.