We analyze the extent to which simple markets can be used to aggregate disperse information into efficient forecasts of uncertain future events. Drawing together data from a range of prediction contexts, we show that market-generated forecasts are typically fairly accurate, and that they outperform most moderately sophisticated benchmarks. Carefully designed contracts can yield insight into the market's expectations about probabilities, means and medians, and also uncertainty about these parameters. Moreover, conditional markets can effectively reveal the market's beliefs about regression coefficients, although we still have the usual problem of disentangling correlation from causation. We discuss a number of market design issues and highlight domains in which prediction markets are most likely to be useful.
|Date of creation:||May 2004|
|Date of revision:|
|Publication status:||published as Justin Wolfers & Eric Zitzewitz, 2004. "Prediction Markets," Journal of Economic Perspectives, American Economic Association, vol. 18(2), pages 107-126, Spring.|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
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- Plott, Charles R & Sunder, Shyam, 1988.
"Rational Expectations and the Aggregation of Diverse Information in Laboratory Security Markets,"
Econometric Society, vol. 56(5), pages 1085-1118, September.
- Plott, Charles R. & Sunder, Shyam., . "Rational Expectations and the Aggregation of Diverse Information in Laboratory Security Markets," Working Papers 463, California Institute of Technology, Division of the Humanities and Social Sciences.
- Slemrod, Joel & Greimel, Timothy, 1999. "Did Steve Forbes scare the US municipal bond market?," Journal of Public Economics, Elsevier, vol. 74(1), pages 81-96, October.
- Forsythe, Robert & Rietz, Thomas A. & Ross, Thomas W., 1999. "Wishes, expectations and actions: a survey on price formation in election stock markets," Journal of Economic Behavior & Organization, Elsevier, vol. 39(1), pages 83-110, May.
- Justin Wolfers & Eric Zitzewitz, 2004.
03-025, Stanford Institute for Economic Policy Research.
- Andrei Shleifer ad Robert W. Vishny, 1995.
"The Limits of Arbitrage,"
Harvard Institute of Economic Research Working Papers
1725, Harvard - Institute of Economic Research.
- Joel Slemrod & Timothy Greimel, 1998. "Did Steve Forbes Scare the Municipal Bond Market?," NBER Working Papers 6583, National Bureau of Economic Research, Inc.
- Plott, Charles R. & Sunder, Shyam., .
"Efficiency of Experimental Security Markets with Insider Information: An Application of Rational Expectations Models,"
331, California Institute of Technology, Division of the Humanities and Social Sciences.
- Plott, Charles R & Sunder, Shyam, 1982. "Efficiency of Experimental Security Markets with Insider Information: An Application of Rational-Expectations Models," Journal of Political Economy, University of Chicago Press, vol. 90(4), pages 663-98, August.
- Andrew Leigh & Justin Wolfers & Eric Zitzewitz, 2003.
"What Do Financial Markets Think of War in Iraq?,"
NBER Working Papers
9587, National Bureau of Economic Research, Inc.
- repec:reg:rpubli:259 is not listed on IDEAS
- Ait-Sahalia, Yacine & Wang, Yubo & Yared, Francis, 2001. "Do option markets correctly price the probabilities of movement of the underlying asset?," Journal of Econometrics, Elsevier, vol. 102(1), pages 67-110, May.
- Smith, Vernon L, 1985. "Experimental Economics: Reply," American Economic Review, American Economic Association, vol. 75(1), pages 264-72, March.
- Martin Spann & Bernd Skiera, 2003. "Internet-Based Virtual Stock Markets for Business Forecasting," Management Science, INFORMS, vol. 49(10), pages 1310-1326, October.
- Thaler, Richard H & Ziemba, William T, 1988. "Parimutuel Betting Markets: Racetracks and Lotteries," Journal of Economic Perspectives, American Economic Association, vol. 2(2), pages 161-74, Spring.
- Bates, David S, 1991. " The Crash of '87: Was It Expected? The Evidence from Options Markets," Journal of Finance, American Finance Association, vol. 46(3), pages 1009-44, July.
- Heckman, James J, 1979.
"Sample Selection Bias as a Specification Error,"
Econometric Society, vol. 47(1), pages 153-61, January.
- Paul W. Rhode & Koleman S. Strumpf, 2004. "Historical Presidential Betting Markets," Journal of Economic Perspectives, American Economic Association, vol. 18(2), pages 127-141, Spring.
- Stefano Athanasoulis & Robert J. Shiller & Eric Van Wincoop, 1999. "Macro markets and financial security," Economic Policy Review, Federal Reserve Bank of New York, issue Apr, pages 21-39.
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