There are two risks. First, the massive rise in bond prices and compression of yields has come in the secondary market. The U.S. Treasury has not yet succeeded in placing much of its massively expanded debt and new requirements for next year at such low levels. But given the panic-driven demand for default-free assets, officials should not have too much difficulty.
The bigger one is that the Fed is misleading investors into the biggest bubble of all time. Bernanke is making what learned economists call a "time-inconsistent" promise to hold interest rates at ultra low levels for an extended period.
The problem is that if the unconventional monetary policy works, and the economy picks up, the Fed will come under pressure to "normalize" rates and reduce excess liquidity to prevent a rise in inflation. The resulting rate rises will inflict massive losses on anyone who bought bonds at today 2.25 percent rate.
Bizarrely, Bernanke and Co are in fact inviting investors to bet the policy will fail, the economy will remain mired in slump for a long period, deflation will occur and interest rates will remain on the floor, as Japan's have done since the 1990s.
Buyers of real estate and subprime securities have recently been lampooned for foolishly overpaying at the top of the market. Bernanke and Co are gambling memories will prove short and investors will prove just as eager to pay top prices for long-term government and private debt even though the downside is large.
Let us have one last bubble, and when it collapses, we promise not to do any more in future...honest.
http://www.reuters.com/article/reutersComService4/idUSTRE4BG3C920081217?pageNumber=3&virtualBrandChannel=10339