This Fed-Based Market Signal is Flashing a Warning for the First Time in Over a Decade: Here’s Why it Matters

The financial world is abuzz with chatter around the so-called “Fed model,” a market-timing strategy that compares the earnings yield of the stock market to the yield on the 10-year Treasury bond. The model has recently signaled a concerning trend, as it shows that the earnings yield of the S&P 500—a critical indicator for investors—has dipped below the 10-year yield for the first time in over ten years. Current figures illustrate that the S&P 500’s earnings yield stands at 3.90%, while the 10-year Treasury yield rests at 4.46%, a difference of over half a percentage point. Given the historical context, this situation is reminiscent of the 2008-09 financial crisis, when similar conditions prevailed. However, the usefulness of the Fed model merits a closer examination.

The Fed Model: A Quick Overview

Traditionally, the Fed model operates on the principle that conditions favor equities when the earnings yield exceeds the 10-year yield and become unfavorable when it is lower. This rule is intuitive; it suggests that when stock market earnings can outpace the guaranteed returns of Treasury bonds, investing in equities becomes the more attractive option. Unfortunately, this model may not hold up under rigorous scrutiny, particularly given its track record.

The Shortcomings of the Fed Model

The weak performance history of the Fed model is a crucial aspect for informed investors. Analyzing the model’s predictions from as far back as 1871, data has shown that the earnings yield alone has consistently outperformed the Fed model in forecasting stock market returns over one, five, and ten-year periods. Specifically:

• When forecasting the S&P 500’s subsequent 12-month return, the r-squared value for the earnings yield is 2.8%, while the Fed model’s is a mere 1.2%.
• For a five-year return, the earnings yield provides an r-squared of 11.3%, compared to 3.9% for the Fed model.
• Over a ten-year period, this discrepancy widens even further: 28.1% for the earnings yield versus 11.4% for the Fed model.

These statistics raise a fundamental question: why does the Fed model fail to outperform its simpler counterpart?

A Misleading Comparison

The answer lies in the apples-to-oranges nature of the comparison between a real yield and a nominal yield. The earnings yield from corporate profits offers a real yield that historically grows faster during inflationary periods, while the 10-year Treasury yield remains a nominal figure unaffected by inflation adjustments. In essence, using the Fed model results in a misleading evaluation of market conditions.

Cliff Asness, the founder of AQR Capital Management, has laid out the empirical shortcomings of the Fed model in his influential paper, “Fight The Fed Model.” Asness argues convincingly that the model’s appeal often misleads strategists and pundits alike, resulting in misguided conclusions. The allure of its common sense approach is overshadowed by its flawed methodology.

Conclusion: Don’t Panic Just Yet

It’s essential to underline that the Fed model’s current negative status isn’t a reason in itself to panic about stock market valuations. While other economic indicators may signal a troubling outlook for equities—such as rising inflation, increased interest rates, and stubborn geopolitical issues—investors should focus on broader contexts and robust data rather than a single model. The reality is, while the stock market may have fundamental concerns, leaning on the Fed model will not yield valid conclusions.

Adopting a cautious yet pragmatic approach is the hallmark of a sound investment strategy. Investors would do well to analyze multiple data points, keep abreast of market conditions, and make informed decisions based on traditional financial principles rather than relying solely on flawed predictive models.