The Federal Reserve Wednesday reassured investors that it will hold interest rates near zero for a “considerable time” after it ends the bond-buying program known as quantitative easing in October. In response, the Dow Jones Industrial Average (^DJI) closed at a new record high.

Former Director of the Office of Management and Budget and author of the book, The Great Deformation, David Stockman, has significant concerns about that very policy.

“I’m worried… that we’ve got the greatest bubble created by a central bank in human history,” he told Yahoo Finance.

In a recent blog post, Stockman offered a handful of high-flying stocks as evidence of what he sees as “madness.”

“…Twitter, is all that is required to remind us that once

again markets are trading in the nosebleed section

of history, rivaling even the madness of March 2000.”

Behind the madness

In an interview with Yahoo Finance, Stockman blamed Fed policy for creating that madness.

“We have been shoving zero-cost money into the financial markets for 6-years running,” he said. “That’s the kerosene that drives speculative trading – the carry trades. That’s what the gamblers use to fund their position as they move from one momentum play and trade to another.”

And that, he says, is not sustainable. While Stockman believes tech stocks are especially overvalued, he warns that it’s not just tech valuations that are inflated. “Everything’s massively overvalued, and it’s predicated on zero-cost overnight money that continues these carry trades; It can’t continue.”

And he still believes, as he has for some time – so far, incorrectly - that there will be a day of reckoning.

“When the trades begin to unwind because the carry cost has to normalize, you’re going to have a dramatic re-pricing dislocation in these financial markets.”

As Yahoo Finance’s Lauren Lyster points out in the associated video, investors who heeded Stockman’s advice last year would have missed out on a 28% run-up in stocks. But Stockman remains steadfast in his belief that the current Fed policy and the resultant market behavior can not continue. “I think what the Fed is doing is so unprecedented, what is happening in the markets is so unnatural,” he said. “This is dangerous, combustible stuff, and I don’t know when the explosion occurs - when the collapse suddenly is upon us - but when it happens, people will be happy that they got out of the way if they did."

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