Alpha generation is the ability of an investment strategy to produce returns that exceed the performance of a specific market index or benchmark.
Understanding alpha generation
In finance, alpha is the excess return of an investment relative to the return of a benchmark index. When portfolio managers or individual investors engage in alpha generation, they use active strategies to beat the market return. This contrasts with beta, which measures the volatility of an investment compared to the broader market. A strategy that generates positive alpha indicates that the investment manager added value beyond what the market provided naturally.
Investors achieve alpha generation through methods like stock selection and market timing. These methods require research to identify mispriced assets. Because market benchmarks track the average performance of a specific asset class, generating alpha requires finding opportunities that the broader market incorrectly valued. This concept applies across all global financial markets, from equities in London to fixed-income securities in Tokyo.
Active management strategies aimed at alpha generation involve higher fees than passive index tracking. Because financial markets are competitive, consistent alpha generation is difficult to maintain over long periods. Investors pay active managers for their skill in generating this excess return. If the strategy fails, the portfolio underperforms the benchmark and produces negative alpha.
Example
Suppose an Elephant wants to invest in the global agricultural sector. The relevant benchmark index for this sector returns 5% over the course of a year. The Elephant bypasses passive index funds and actively researches agricultural companies that produce peanut crops in West Africa and sugarcane in Brazil. By allocating capital to these specific companies based on anticipated supply shortages, the Elephant’s agricultural portfolio returns 8% over the same one-year period. The 3% difference between the portfolio return and the benchmark index return is the alpha. The Elephant’s research and asset selection resulted in successful alpha generation.