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A meta-analysis of the equity premium

Authors
Disciplines
  • Economics

Abstract

The literature on the equity premium vigorously debates how to measure the premium, what is its size and what determines its variation. This study provides a quantitative survey of the literature through a meta-analysis. We identify how the size of the equity premium depends on the way it is measured, along with its evolution over time and its variation across regions in the world. We find that the equity premium is significantly lower in measurements by ex ante rather than ex post methods, in more recent periods, and�in more developed countries. Looking at the underlying fundamentals, we find that larger volatility in GDP growth tends to raise the equity premium, while a higher nominal interest rate has a negative impact on the equity premium. �

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