The Turtle and the Pendulum

Even if valuations stay within the top 20% of historical extremes, high valuations imply large price fluctuations in response to very small changes in the expected return demanded by investors. As I’ve noted before, a market crash is nothing but risk aversion meeting a market that’s not priced for risk. For our part, particularly with the adapted hedging implementation I’ve described in recent months, it will be enough for us simply for the market to fluctuate – whether in a permanently high range of valuations, or visiting run-of-the-mill norms, or collapsing to depressed levels, or anywhere in-between.Quote from Benjamin Graham

Imagine a turtle walking along the shoreline. On its shell is a pendulum, swinging backward and forward, also aligned with the shoreline. When the pendulum swings forward, the bob at the end of the string swings ahead even faster than the turtle does. When the pendulum swings backward, the bob loses ground even as the turtle plods forward. At any point in time, the movement of the bob is driven not only by the average speed of the turtle, but the gradual emergence and elimination of accumulated extremes, along with random gusts of wind as the pendulum swings back and forth.

Change is the sum of fundamental trends, the gradual elimination of accumulated extremes, and the random arrival of new shocks. This is true for nearly every process, including, for example, economic growth and stock market returns.

Before discussing valuations, it’s critical to emphasize that valuations are not a timing tool. Valuations are enormously informative about the prospects for long-term investment returns, and potential downside risk over the complete market cycle. But investment returns over shorter segments of the market cycle are driven by investor psychology, including the frequent attachment of that psychology to day-to-day developments that have very little bearing on long-term cash flows.

Our most reliable gauge of speculative versus risk-averse psychology is the uniformity or divergence of market action across thousands of individual stocks, industries, sectors, and security types, because when investors are inclined to speculation, they tend to be indiscriminate about it. We also attend to overextended extremes in prices, sentiment, valuations, and other considerations that comprise the core of our investment discipline.