A boom-turned-bubble is one scenario for an end to the secular trend, but an inflation bust is another. Below in the Commodity Super Cycles chart we see that commodities appear to have entered another secular bull market of their own. What’s interesting about this is that super-cycles for commodities and equities tend to be mirror images of each other (illustrated by the 10-year CAGRs below). So perhaps the strength in commodities is a subtle early warning sign for the secular trend in equities.
If commodities continue to rally, the “open jaw” below between the Bloomberg Commodity Spot Index and the 5-year TIPS break-even will be a challenge for the bond bulls. One of those lines is wrong, I think, and if it’s the inflation break-evens, then it has implications for the Fed and therefore for bonds and therefore for equities via the Fed model.
The Fed model returned to relevance in 2022 after being dormant for several decades. The Fed model simply holds that if the risk-free asset is competitively priced against the risk asset (equities), and its valuation derates, then so must equities. Hence, per the above chart, if inflation remains sticky in the 3-4% area and pushes up the TIPS breaks, then bond yields may well rise into that danger zone of 5% or above, which per the Fed model could force the stock market to derate.