Mr. Market

# Mr. Market **Mr. Market** is Buffett's most beloved metaphor, drawn directly from Benjamin Graham's "The Intelligent Investor." The allegory has shaped how generations of investors think about market volatility. ## The Allegory Imagine that you own a private business, and every day your partner, Mr. Market, appears at your door offering to buy your share of the business or sell you his share. The prices he quotes vary wildly: - On some days, he is euphoric and offers prices far above what the business could reasonably be worth - On other days, he is depressed and offers prices far below any reasonable estimate of value - Most days, his prices are somewhere in between Mr. Market is always there, always offering to trade. He does not care whether you trade. He is simply reflecting the mood of the moment—the collective fear and greed of all market participants. ## What the Intelligent Investor Does The intelligent investor uses Mr. Market's moods to advantage: **When Mr. Market offers high prices (euphoria):** Consider selling, or at least refrain from buying. High prices mean lower future returns and less margin of safety. **When Mr. Market offers low prices (despair):** Consider buying. Low prices mean higher expected returns and more margin of safety. Be greedy when others are fearful. **When Mr. Market's prices are reasonable:** Do nothing and continue to evaluate the business's long-term prospects. > "The market is a device for transferring money from the active to the patient." ## Why Mr. Market Is Often Wrong Mr. Market's prices reflect short-term psychology, not long-term fundamentals. The market's collective mood swings between fear and greed, creating persistent mispricings that the rational investor can exploit. This is not because individual investors are stupid. It is because markets consist largely of participants who are: - Paid to trade (creating activity pressure) - Evaluated on short-term performance (creating short-termism) - Influenced by narrative and emotion (rather than analysis) The patient, analytical investor benefits from this irrationality. ## The Two Rules of Mr. Market 1. **Rule 1**: Never rely on Mr. Market's daily prices to tell you what your business is worth 2. **Rule 2**: Use Mr. Market's moods to buy and sell profitably The worst mistake is treating Mr. Market's daily quote as a fact. It is only an opinion—one that changes daily, reflecting the mood of the moment. ## Long-Term Rationality In the short run, Mr. Market is powerfully irrational. In the long run, business value ultimately determines stock prices. This is why Buffett says: > "In the short run, the market is a voting machine. In the long run, it is a weighing machine." The voting machine reflects popularity contests. The weighing machine measures real business value. Patient investors who wait for the weighing machine to assert itself are rewarded.