Bond Market On Yield Curve Inversion Watch

 | Dec 16, 2018 12:07AM ET

Summary

  • Markets formally on inversion watch
  • The long-end of the curve has started to come in as traders see slower growth, lower inflationary pressure
  • The short-end of the curve is rising; we've seen some modest inversions in the belly of the curve this past week

What is the inversion of the yield curve and why is it so important? To answer that, let's look at the dynamics of the yield curve in relation to the economic cycle, starting at the beginning of an expansion.

Here, the Fed has lowered rates with the intent to stimulate economic activity. At the same time, there is little growth and, hence, little inflation, which means long-term bond yields are high. This explains why the yield curve is very steep at the beginning of an expansion.

About 1/2-2/3 of the way through an expansion, central bankers start to become concerned about inflation, reasoning that increased economic activity will constrain resources and push up prices. To prevent this, they start to raise short-term interest rates.

Sometimes the long-end of the curve will sell off, fearing the potential inflationary bite. This keeps the curve's overall steepness more or less constant for a while. But at some point the long-end of the curve will start to tighten as traders sense slowing economic growth. This occurs while the Fed is probably at the tail-end of its rate-hiking program. The following long-term graph shows the dynamic in action: