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Stock Prices, Anticipations and Investment in General Equilibrium

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Listed:
  • Jacques Drèze
  • Oussama Lachiri
  • Enrico Minelli

Abstract

We propose an objective for the firm in a model of production economies extending over time under uncertainty and with incomplete markets. We derive the objective of the firm from the assumption of initial-shareholders efficiency. Each shareholder is assumed to commu- nicate to the firm her marginal valuation of profits at all future events (expressed in terms of initial resources). In defining her own marginal valuation of the firm's profits, a shareholder takes into consideration the direct impact of a change in the value of dividends but also the impact of future dividends on the firm's stock price when she trades shares. To predict the impact on the stock price, she uses a state price process, her price theory. The firm computes its own shadow prices for profits at all date-events by simply adding up the marginal valuations of all its initial shareholders. The only restriction that we may want to impose on price theories is that they should be compat- ible with the observed equilibrium: given the equilibrium prices and production plans, a price theory must satisfy a no-arbitrage condition. With incomplete markets and no-short selling constraints, this restric- tion need not suffice to bring consistency in the individuals marginal evaluations. As a consequence, the existence of equilibria may require constraints on the firm's investment.

Suggested Citation

  • Jacques Drèze & Oussama Lachiri & Enrico Minelli, 2009. "Stock Prices, Anticipations and Investment in General Equilibrium," Working Papers 0916, University of Brescia, Department of Economics.
    • Handle: RePEc:ubs:wpaper:0916
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    References listed on IDEAS

    as
    1. Radner, Roy, 1972. "Existence of Equilibrium of Plans, Prices, and Price Expectations in a Sequence of Markets," Econometrica, Econometric Society, vol. 40(2), pages 289-303, March.
    2. Geanakoplos, J. & Magill, M. & Quinzii, M. & Dreze, J., 1990. "Generic inefficiency of stock market equilibrium when markets are incomplete," Journal of Mathematical Economics, Elsevier, vol. 19(1-2), pages 113-151.
    3. Makowski, Louis & Pepall, Lynne, 1985. "Easy Proofs of Unanimity and Optimality without Spanning: A Pedagogical Note," Journal of Finance, American Finance Association, vol. 40(4), pages 1245-1250, September.
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    Citations

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    Cited by:

    1. Jacques Dreze, 2016. "Existence and multiplicity of temporary equilibria under nominal price rigidities," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 62(1), pages 279-298, June.
    2. Monica Billio & Roberto Casarin, 2010. "Bayesian Estimation of Stochastic-Transition Markov-Switching Models for Business Cycle Analysis," Working Papers 1002, University of Brescia, Department of Economics.
    3. Zoran Popovic & Marko Backovic, 2017. "Sequential Model of Economic System and Constrained Pareto Optimality," Montenegrin Journal of Economics, Economic Laboratory for Transition Research (ELIT), vol. 13(1), pages 141-158.
    4. repec:mje:mjejnl:v:12:y:2017:i:1:p:141-158 is not listed on IDEAS
    5. DEHEZ, Pierre, 2012. "Incomplete-markets economies: the seminal work of Diamond, Drèze and Radner," LIDAM Discussion Papers CORE 2012029, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    6. Volker Britz & P. Herings & Arkadi Predtetchinski, 2013. "A bargaining theory of the firm," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 54(1), pages 45-75, September.
    7. Martin Meier & Enrico Minelli & Herakles Polemarchakis, 2014. "Competitive markets with private information on both sides," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 55(2), pages 257-280, February.
    8. Britz, V. & Herings, P.J.J. & Predtetchinski, A., 2010. "Theory of the firm: bargaining and competitive equilibrium," Research Memorandum 057, Maastricht University, Maastricht Research School of Economics of Technology and Organization (METEOR).

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    More about this item

    JEL classification:

    • D2 - Microeconomics - - Production and Organizations
    • D51 - Microeconomics - - General Equilibrium and Disequilibrium - - - Exchange and Production Economies
    • D52 - Microeconomics - - General Equilibrium and Disequilibrium - - - Incomplete Markets
    • D53 - Microeconomics - - General Equilibrium and Disequilibrium - - - Financial Markets
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
    • M20 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Business Economics - - - General
    • P12 - Political Economy and Comparative Economic Systems - - Capitalist Economies - - - Capitalist Enterprises

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