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Asset Trading Volume with Dynamically Complete Markets and Heterogeneous Agents

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Author Info
Kenneth L. Judd
Felix Kubler
Karl Schmedders

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Abstract

The trading volume of long-lived securities with recursive payoffs, such as equity, is generically zero in infinite-horizon recursive pure exchange Lucas asset models with heterogeneous agents. In equilibrium, there is no portfolio rebalancing of such assets. More generally, the end-of-period portfolio of long- and short-lived securities is constant over time and states in the generic economy. We also present a nonrobust formulation of dynamically complete markets which does have nonzero trading volume in equilibrium. The comparisons show that any theory of asset trading volume will be very sensitive to small changes in model specifications.

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Paper provided by Northwestern University, Center for Mathematical Studies in Economics and Management Science in its series Discussion Papers with number 1294.

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Date of creation: May 2000
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Handle: RePEc:nwu:cmsems:1294

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  1. Brock, William A & LeBaron, Blake D, 1996. "A Dynamic Structural Model for Stock Return Volatility and Trading Volume," The Review of Economics and Statistics, MIT Press, vol. 78(1), pages 94-110, February. [Downloadable!] (restricted)
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  2. Duffie, Darrell, et al, 1994. "Stationary Markov Equilibria," Econometrica, Econometric Society, vol. 62(4), pages 745-81, July. [Downloadable!] (restricted)
  3. Wang, Jiang, 1994. "A Model of Competitive Stock Trading Volume," Journal of Political Economy, University of Chicago Press, vol. 102(1), pages 127-68, February. [Downloadable!] (restricted)
  4. Judd, Kenneth L. & Kubler, Felix & Schmedders, Karl, 2000. "Computing equilibria in infinite-horizon finance economies: The case of one asset," Journal of Economic Dynamics and Control, Elsevier, vol. 24(5-7), pages 1047-1078, June. [Downloadable!] (restricted)
  5. Lucas, Robert E, Jr, 1978. "Asset Prices in an Exchange Economy," Econometrica, Econometric Society, vol. 46(6), pages 1429-45, November. [Downloadable!] (restricted)
  6. Bewley, Truman F., 1972. "Existence of equilibria in economies with infinitely many commodities," Journal of Economic Theory, Elsevier, vol. 4(3), pages 514-540, June. [Downloadable!] (restricted)
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