In a recent webcast to DoubleLine Funds' clients, Jeff Gundlach presented a series of eye-opening charts on the state of the global economy.

The presentation, titled "To Catch A Thief," included charts showing how tuition costs are exploding higher and delinquencies are surging.

"What have all these soaring tuition costs got you?" asked Gundlach rhetorically.

That was the lead into another chart that showed wages for 25–34-year-olds falling.

Gundlach believes this is a "real problem."