Market Demand Functions in the CAPM
We demonstrate that in a CAPM economy Walras Law and the Tobin Separation Property characterize market demand in finite sets of prices. Consequently, for any number n there exist CAPM economies which have at least n equilibria and hence have n different beta pricing fomulas. It is shown that the lower bound on the number of equilibria, n, is robust to pertubations of endowments.
|Date of creation:||Mar 1995|
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- J. Tobin, 1958.
"Liquidity Preference as Behavior Towards Risk,"
Review of Economic Studies,
Oxford University Press, vol. 25(2), pages 65-86.
- James Tobin, 1956. "Liquidity Preference as Behavior Towards Risk," Cowles Foundation Discussion Papers 14, Cowles Foundation for Research in Economics, Yale University.
- Nielsen, Lars Tyge, 1990. "Existence of equilibrium in CAPM," Journal of Economic Theory, Elsevier, vol. 52(1), pages 223-231, October.
- Harry Markowitz, 1952. "Portfolio Selection," Journal of Finance, American Finance Association, vol. 7(1), pages 77-91, 03.
- Koch, Karl-Josef, 1989. "Mean demand when consumers satisfy the weak axiom of revealed preference," Journal of Mathematical Economics, Elsevier, vol. 18(4), pages 347-356, September.
- Koch,Karl-Josef, 1987. "Mean demand when consumers satisfy the weak axiom of revealed preferences," Discussion Paper Serie A 102, University of Bonn, Germany.
- Chiappori, Pierre-Andre & Rochet, Jean-Charles, 1987. "Revealed Preferences and Differentiable Demand: Notes and Comments," Econometrica, Econometric Society, vol. 55(3), pages 687-691, May.
- Andreu, Jordi, 1982. "Rationalization of market demand on finite domains," Journal of Economic Theory, Elsevier, vol. 28(1), pages 201-204, October.
- William F. Sharpe, 1964. "Capital Asset Prices: A Theory Of Market Equilibrium Under Conditions Of Risk," Journal of Finance, American Finance Association, vol. 19(3), pages 425-442, 09.
- Nielsen, Lars Tyge, 1988. "Uniqueness of Equilibrium in the Classical Capital Asset Pricing Model," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 23(03), pages 329-336, September.
- Black, Fischer, 1972. "Capital Market Equilibrium with Restricted Borrowing," The Journal of Business, University of Chicago Press, vol. 45(3), pages 444-455, July. Full references (including those not matched with items on IDEAS)
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