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Equity Premium

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"In the US, equities have outperformed bonds by around 7% p.a. for most of the 20th century. Economists have long been puzzled by the magnitude of this outperformance. For sure annual stock returns are more volatile than annual bond returns. But most models used by economists show an equity risk premium of 1 - 2 % maximum. Why should stocks require such a large compensation for their risk.

Benartzi and Thaler (1995) propose an explanation based on prospect theory. What if investors aren't risk-averse over variable returns, but rather they care about the chance of a loss"
Montier (2002) page 23

"...the equity premium, the extra return that people require to be compensated for the risk of investing in the stock market..."
Shiller (2000) [book]

Possible explanations of the equity premium puzzle:

  1. The puzzle is an illusion: the empirical data are wrong
  2. High risk aversion
  3. Nonstandard utility functions
  4. Autocorrelation in returns
  5. Time varying expected returns
  6. Heterogeneous investors
Or, more likely, a mixture of the above.

Book

Top 10 Papers

  1. MEHRA, R., 2003. The Equity Premium: Why is it a Puzzle?. [Cited by 1777] (418.91/year)
  2. CONSTANTINIDES, G.M., 1990. Habit Formation: A Resolution of the Equity Premium Puzzle. The Journal of Political Economy. [Cited by 700] (40.60/year)
  3. BENARTZI, S. and R.H. THALER, 1995. Myopic Loss Aversion and the Equity Premium Puzzle. The Quarterly Journal of Economics. [Cited by 586] (47.87/year)
  4. WEIL, P., 1989. The Equity Premium Puzzle and the Riskfree Rate Puzzle. [Cited by 466] (25.55/year)
  5. KOCHERLAKOTA, N.R., 1996. The Equity Premium: It's Still a Puzzle. Journal of Economic Literature. [Cited by 492] (43.76/year)
  6. FAMA, E.F. and K.R. FRENCH, 2002. The Equity Premium. The Journal of Finance. [Cited by 241] (45.97/year)
  7. MANKIW, N.G., 1987. The Equity Premium and the Concentration of Aggregate Shocks. [Cited by 140] (6.92/year)
  8. CONSTANTINIDES, G.M., J.B. DONALDSON and R. MEHRA, 1998. Junior Can't Borrow: A New Perspective on the Equity Premium Puzzle. gsbwww.uchicago.edu. [Cited by 180] (19.48/year)
  9. GOYAL, A. and I. WELCH, 2002. Predicting the Equity Premium With Dividend Ratios. [Cited by 152] (29.00/year)
  10. MOSKOWITZ, T.J. and A. VISSING-JORGENSEN, 2002. The Returns to Entrepreneurial Investment: A Private Equity Premium Puzzle?. The American Economic Review. [Cited by 189] (36.06/year)

Bibliography