Asset price dynamics when behavioural heterogeneity varies
We build a model in which asset prices are expectationally driven and agents forecast future prices hinging on a combination of fundamental value, trend and inertia. The model has a unique steady state and we investigate its stability. In particular the amount of behavioural heterogeneity in the model is given by the number of intermediaries actually operating in the market: we are concerned with the effects that changing such number produces on the steady state in terms of stability. Assuming that the set of relevant intermediaries is sampled randomly we discuss the probability of having stability as a function of the market's parameters and the number of such agents. Our simulations show that stability in the multi-agent setting does not require that conditions for stability in the representative agent case be met for every individual; so stability can arise even if some of the agents would not be compatible with it if they were the only ones operating in the market. The same goes for instability. Further, we find that stabilising (or destabilising) effects of heterogeneity are not uniform across the market's essential characteristics, as captured by a given structural parameter: in fact we can identify a parametric region in which heterogeneity is stabilising and another in which it is destabilising.
|Date of creation:||Nov 2006|
|Date of revision:|
|Publication status:||Published as Domenico Colucci and Vincenzo Valori, 2008. "Asset Price Dynamics When Behavioural Heterogeneity Varies," Computational Economics, Springer, vol. 32(1), pages 3-20.|
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- Alok Johri & Lohn Leach, 2000.
"Middlemen and the Allocation of Heterogeneous Goods,"
Department of Economics Working Papers
2000-06, McMaster University.
- Alok Johri & John Leach, 2002. "Middlemen and the Allocation of Heterogeneous Goods," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 43(2), pages 347-362, May.
- Graham Elliott & Takatoshi Ito, 1998.
"Heterogeneous Expectations and Tests of Efficiency in the Yen/Dollar Forward Exchange rate Market,"
Discussion Paper Series
a347, Institute of Economic Research, Hitotsubashi University.
- Elliott, Graham & Ito, Takatoshi, 1999. "Heterogeneous expectations and tests of efficiency in the yen/dollar forward exchange rate market," Journal of Monetary Economics, Elsevier, vol. 43(2), pages 435-456, April.
- Elliott, Graham & ITO, TAKATOSHI, 1998. "Heterogeneous Expectations and Tests of Efficiency in the Yen/Dollar Forward Exchange Rate Market," University of California at San Diego, Economics Working Paper Series qt5wm0q8mz, Department of Economics, UC San Diego.
- Annette Vissing-Jorgensen, 2002. "Towards an Explanation of Household Portfolio Choice Heterogeneity: Nonfinancial Income and Participation Cost Structures," NBER Working Papers 8884, National Bureau of Economic Research, Inc.
- Fingleton, John, 1997. "Competition among Middlemen When Buyers and Sellers Can Trade Directly," Journal of Industrial Economics, Wiley Blackwell, vol. 45(4), pages 405-27, December.
- Day, Richard H. & Huang, Weihong, 1990.
"Bulls, bears and market sheep,"
Journal of Economic Behavior & Organization,
Elsevier, vol. 14(3), pages 299-329, December.
- Cars Hommes & Joep Sonnemans & Jan Tuinstra & Henk van de Velden, 2005.
"Coordination of Expectations in Asset Pricing Experiments,"
Review of Financial Studies,
Society for Financial Studies, vol. 18(3), pages 955-980.
- Cars Hommes & Joep Sonnemans & Jan Tuinstra & Henk van de Velden, 2004. "Coordination of Expectations in Asset Pricing Experiments," DNB Staff Reports (discontinued) 119, Netherlands Central Bank.
- Stephen Morris & Hyun Song Shin, 2006. "Inertia of Forward-Looking Expectations," American Economic Review, American Economic Association, vol. 96(2), pages 152-157, May.
- Brock, W.A. & Hommes, C.H. & Wagener, F.O.O., 2002.
"Evolutionary dynamics in markets with many trader types,"
CeNDEF Working Papers
02-10, Universiteit van Amsterdam, Center for Nonlinear Dynamics in Economics and Finance.
- Brock, William A. & Hommes, Cars H. & Wagener, Florian O. O., 2005. "Evolutionary dynamics in markets with many trader types," Journal of Mathematical Economics, Elsevier, vol. 41(1-2), pages 7-42, February.
- Domenico Colucci & Vincenzo Valori, 2005. "Ways of learning in a simple economic setting: a comparison," Working Papers - Mathematical Economics 2005-01, Universita' degli Studi di Firenze, Dipartimento di Scienze per l'Economia e l'Impresa.
- William A. Branch, 2004. "The Theory of Rationally Heterogeneous Expectations: Evidence from Survey Data on Inflation Expectations," Economic Journal, Royal Economic Society, vol. 114(497), pages 592-621, 07.
- Beja, Avraham & Goldman, M Barry, 1980. " On the Dynamic Behavior of Prices in Disequilibrium," Journal of Finance, American Finance Association, vol. 35(2), pages 235-48, May.
- John Rust & George Hall, 2002.
"Middlemen versus Market Makers: A Theory of Competitive Exchange,"
NBER Working Papers
8883, National Bureau of Economic Research, Inc.
- John Rust & George Hall, 2003. "Middlemen versus Market Makers: A Theory of Competitive Exchange," Journal of Political Economy, University of Chicago Press, vol. 111(2), pages 353-403, April.
- John Rust & George Hall, 2001. "Middle Men Versus Market Makers: A Theory of Competitive Exchange," Cowles Foundation Discussion Papers 1299, Cowles Foundation for Research in Economics, Yale University.
- Benassy-Quere, Agnes & Larribeau, Sophie & MacDonald, Ronald, 2003. "Models of exchange rate expectations: how much heterogeneity?," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 13(2), pages 113-136, April.
- Egenter, E. & Lux, T. & Stauffer, D., 1999. "Finite-size effects in Monte Carlo simulations of two stock market models," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 268(1), pages 250-256.
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