In the wake of the financial crisis, investors have flocked to so-called safe haven investments like U.S. treasuries and debt of Germany and the United Kingdom. The price for that safety is too high, however, according to some experts. Those experts claim that the debt of those safe havens has been bid up into bubbles with negative returns. In other words, some investors are paying more than par value and not receiving any interest, in order to lock in the least possible loss.