Mr. Market Miscalculates

Summary

• Benjamin Graham introduced the "Mr. Market" metaphor in his 1949 book *The Intelligent Investor* to describe how market prices can diverge wildly from intrinsic value due to investor enthusiasm or fear.
• The S&P 500 rose 54% over the 21 months ending July 31, 2024, driven by optimism that economic growth would lower inflation and prompt Federal Reserve rate cuts.
• On July 31, 2024, the Bank of Japan raised its short-term interest rate to 0.25%, its largest increase in 17 years, which triggered unwinding of leveraged "carry trade" positions.
• Mixed U.S. economic news released on August 1 and 2 included a dip in the Manufacturing Purchasing Managers' Index, rising jobless claims, and a moderation in employment gains.
• The U.S. unemployment rate stood at 4.3% at the end of July, up from a low of 3.4% in April 2023, raising concerns based on the "Sahm Rule."
• Berkshire Hathaway announced it sold a significant portion of its Apple shares, contributing to a market rout alongside the other negative factors.
• The S&P 500 fell by a total of 6.1% over three consecutive trading days on August 1, 2, and 5.
• Market volatility often stems from psychological mood swings that cause investors to swing between euphoria and depression rather than reacting rationally to data.
• Cognitive dissonance leads investors to ignore or reject data that conflicts with their prior beliefs until a critical mass of negative news triggers a rout.
• During extreme market moves, correlations between asset classes tend to increase, causing investors to sell all assets indiscriminately.
• Contagion occurs when negative developments in one region prompt investors in other regions to sell based on perceived trouble.
• Investors often engage in wishful thinking, such as "Goldilocks thinking," which assumes the economy will avoid both inflation and recession.
• Financial memory is often short, allowing investors to repeat aggressive behaviors without recalling past errors.
• No immutable rules govern market behavior, as prices reflect shifting investor psychology rather than natural laws.
• In the short term, the market acts as a voting machine driven by sentiment, while in the long run, it functions as a weighing machine assessing asset merit.