Joseph E. Stiglitz

Layers of money managers that don't bear the brunt of losses but walk away with big payouts when things go well have turned the US economy to a type of "ersatz capitalism," Joseph Stiglitz, Columbia University professor and Nobel laureate, told CNBC Tuesday.

"An awful lot of people are not managing their own money," Stiglitz said. "In old-style 19th Century capitalism, I owned my company, I made a mistake, I bore the consequences."