Can Investors Profit from the Prophets? Consensus Analyst Recommendations and Stock Returns

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Abstract
In this paper we document that an investment strategy based on the consensus (average) analyst recommendations of security analysts earns positive returns. For the period 1986-1996, a portfolio of stocks most highly recommended by analysts earned an annualized geometric mean return of 18.8 percent, while a portfolio of stocks least favorably recommended earned only 5.78 percent. (In comparison, an investment in a value-weighted market index earned an annualized geometric mean return of 14.5 percent.) Alternatively stated, purchasing stocks most highly recommended yielded a return of 102 basis points per month. The magnitude of this return is surprisingly large, and is far greater than the size effect (negative 16 basis points) and book-to-market effect (17 basis points) for the same period. Even after controlling for these two effects, as well as for price momentum, we show that the strategy of purchasing stocks most highly recommended and selling short those least favorably recommended yielded a return of 75 basis points per month. These results are robust to partitions by time period and overall market direction, and are most pronounced for small and medium-sized firms. The abnormal returns also persist when we allow a lapse of up to 15 days before acting on the investment recommendations. There is no extant theory of asset pricing that explains these results.

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