Boom-Bust Cycle Update

 | Oct 04, 2021 12:25AM ET

There are two things that always happen at or prior to the start of a boom-to-bust transition for the US economy. One is a clear-cut widening of credit spreads and the other is pronounced weakness in the Industrial Metals Index (GYX) relative to the gold price.

These indicators have sometimes warned incorrectly that a bust was about to begin, but they have never failed to signal an actual boom-to-bust transition in a timely manner. Below are charts showing the current positions of these reliable boom-bust indicators.

The first chart shows the ICE BofA US High Yield  Option-Adjusted Spread (HYIOAS), a good indicator of US credit spreads.

In early-July of this year the HYIOAS was at its lowest level in more than 10 years and not far from an all-time low. It spiked upward around the middle of July, but it has since returned to near its low. This means that credit spreads in the US remain close to their narrowest levels ever.

Note that a credit-spread reversal would be signaled by the HYIOAS making a higher short-term high AND moving back above 4%. The first of these criteria (the initial warning) would be triggered by a move above 3.5%.