Will 2024 be 1968 Déjà Vu All Over Again?

An examination of the prevailing state of the secular trend for inflation- adjusted stock prices reveal some interesting similarities between 1968 and 2024, and these parallels extend beyond the realm of financial markets. It’s important in this exercise to use inflation-adjusted stock prices because inflation can seriously erode the purchasing value of a portfolio over time, and this will not be picked up by simply using nominal prices.

Secular Trends

The term “secular trend” refers to the long-term swings in CPI adjusted equities that have averaged 15 to 20 years. Equities thrive on modest inflation or deflation, as this provides a relatively stable foundation on which secular bull markets can evolve and prosper. Eventually, crowd psychology reaches an extreme and reverses, as perceptions of excessive inflation or deflation take hold. As a testament, the three secular bear markets for stocks since 1900 have averaged losses of 65% in real terms. Psychology is reflected in Chart 1 by the Shiller P/E ratio. This well-known valuation tool is normally thought of as a fundamental indicator, but we regard it as a measure of sentiment. Otherwise, how can you explain that investors were happy to pay $32 for a dollar’s worth of earnings in 1929, were they not optimistic. Yet willing to pay less than $7 in 1932, if not downright pessimistic?

The Similarities Between the 1966 Secular Peak and 2022

Chart 1 shows an oscillator that reflects these secular trends. The vertical lines intersect with its peaks, which are not that far from the inflation-adjusted S&P and Shiller P/E highs. Based on its current elevation and trajectory, there’s a reasonable chance the secular bull market emanating in 2009 began to reverse in December 2021.