In an incomplete asset market, firms assign values to investment plans by projecting their payoffs on the span of the payoffs of marketed assets; equivalently, firms employ the Capital Asset Pricing Model. This is a criterion that does not require firms to possess information, such as the marginal valuation of revenue across date -- events by shareholders, which is not observable; rather, it is based on information revealed by the prices and payoffs of marketed assets. Under standard assumptions, competitive equilibria exist. But, competitive equilibrium allocations need not satisfy a condition of constrained Pareto optimality that recognizes the incompleteness of the asset market; and, even in the absence of nominal assets, competitive equilibrium allocations are generically indeterminate -- they are determinate if firm consider the commodity payoffs of shares.
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A. De Waegenaere & H. Polemarchakis & L. Ventura, 2002.
"Asset Markets and Investment Decisions,"
International Economic Review,
Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 43(3), pages 857-873, August.
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Find related papers by JEL classification: D46 - Microeconomics - - Market Structure and Pricing - - - Value Theory D50 - Microeconomics - - General Equilibrium and Disequilibrium - - - General D52 - Microeconomics - - General Equilibrium and Disequilibrium - - - Incomplete Markets
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