Search This Blog

Saturday, October 23, 2010

Why Quantitative Easing Needs to Involve Securities Other than Government Securities - Grasping Reality with Both Hands

Why Quantitative Easing Needs to Involve Securities Other than Government Securities - Grasping Reality with Both Hands:
The point--from one point of view, the neo-Wicksellian point of view--behind quantitative easing is to reduce the interest rate that matters for private business investment: the long-term, default-risky, systemic-risky, beta-risky, real interest rates at which private businesses finance their capital expenditures. You can reduce this flow-of-funds equilibrium interest rate and raise the level of economic activity in any neo-Wicksellian framework in two ways:

1. Reduce the 'safe' real interest rate on short-term, safe government bonds.
2. Reduce the various premia--duration, default, systemic risk, and beta risk--between the rates the Treasury pays to borrow in T-bills and the rates businesses pay to borrow.

Conventional open-market operations that lower the nominal interest rate on T-bills accomplish the first. Once the nominal interest rate on T-bills has been pushed to zero, quantitative easing policies that create expectations of higher future inflation continue to lower the real interest rate on T-bills and thus help the situation.

Suppose, however, that the nominal interest rate on T-bills is zero and that you cannot alter inflation expectations--cannot commit to keeping your quantitative easing permanent, cannot commit to an exchange rate path, whatever, you cannot do it and inflation expectations are immovable. Then what?

Then, as Paul Krugman says, quantitative easing is working be altering the spread between the short-term safe T-bill rate and the long-term, systemic-risky, beta-risky, default-risky rate. How does it do that? Lloyd Metzler and James Tobin would say that it does so by altering relative asset supplies--by taking duration risk, systemic risk, beta risk, and default premia off of private savers' books and placing them on the government's books (and thus on the taxpayers, who are a very different group of people than are private savers). To the extent that quantitative easing thus involves assets whose risk characteristics are very similar--federal funds and two-year T-notes, say--we would not expect even a lot of quantitative easing to have much of an effect on anything.

Thus a quantitative easing program that is going to have bite should involve Federal Reserve purchases of long-term risky private assets rather than merely long-term U.S. Treasuries. Hiring PIMCO as an agent to manage a long bond index portfolio naturally comes to mind--if one could avoid its front-running.

And, of course, the most effective quantitative easing program of all would involve the Federal Reserve issuing reserve deposits and using that purchasing power to buy the assets that are the furthest away in their risk characteristics from short-term government bonds: bridges, dams, the human capital of American citizens, police protection, research and development. The best quantitative easing program of all is a money-financed fiscal stimulus, as Jacob Viner said back in 1933

No comments:

Post a Comment