Long-Run Stock Returns: Participating in the Real Economy

Roger G. Ibbotson () and Peng Chen ()
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Roger G. Ibbotson: Yale University, School of Management
Peng Chen: Ibbotson Associates

Yale School of Management Working Papers from Yale School of Management

Abstract: In the study reported here, we estimated the forward-looking long-term equity risk premium by extrapolating the way it has participated in the real economy. We decomposed the 1926–2000 historical equity returns into supply factors-inflation, earnings, dividends, the P/E, the dividend-payout ratio, book value, return on equity, and GDP per capita. Key findings are the following. 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. The bulk of the return is attributable to dividend payments and nominal earnings growth (including inflation and real earnings growth). Third, the increase in the equity market relative to economic productivity can be more than fully attributed to the increase in the P/E. Fourth, a secular decline has occurred in the dividend yield and payout ratio, rendering dividend growth alone a poor measure of corporate profitability and future growth. Our forecast of the equity risk premium is only slightly lower than the pure historical return estimate. We estimate the expected long-term equity risk premium (relative to the long-term government bond yield) to be about 6 percentage points arithmetically and 4 percentage points geometrically.

Keywords: Portfolio Management; Asset Allocation (search for similar items in EconPapers)
Date: 2003-04-04
New Economics Papers: this item is included in nep-fin
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Persistent link: https://EconPapers.repec.org/RePEc:ysm:somwrk:ysm354

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