Stock Market Returns in the Long Run: Participating in the Real Economy
We estimate the forward-looking long-term equity risk by extrapolating the way it participated in the real economy. We decompose the 1926-2000 historical equity returns into supply factors including inflation, earnings, dividends, price to earnings ratio, dividend payout ratio, book value, return on equity, and GDP per capita. There are several key findings: First, the growth in corporate productivity measured by earnings is in line with the growth of overall economic productivity. Second, P/E increases account for only a small portion of the total return of equity (1.25% of the total 10.70%). The bulk of the return is attributable to dividend payments and nominal earnings growth (including inflation and real earnings growth). Third, the increase in factor share of equity relative to the overall economy can be more than fully attributed to the increase in the P/E ratio. Fourth, there is a secular decline in the dividend yield and payout ratio, rendering dividend growth alone a poor measure of corporate profitability and future growth. Contrary to several recent studies, our supply side model forecast of the equity risk premium is only slightly lower than the pure historical return estimate. The long-term equity risk premium (relative to the long-term government bond yield) is estimated to be about 6% arithmetically, and 4% geometrically. Our estimate is in line with both the historical supply measures of the public corporations (i.e., earnings) and the overall economic productivity (GDP per capita).
|Date of creation:||01 Jul 2001|
|Date of revision:||01 Apr 2002|
|Contact details of provider:|| Web page: http://icf.som.yale.edu/|
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