Knowledge that Transforms

Scholes 1 considered the effect of secondary sales of large blocks of stock on the price of the stock. However, he only looked at price changes occurring just before and just after the sale took place. It is argued here, using a simple model, that if traders have rational expectations they may anticipate the sale, and prices could reflect this possibility long before it actually occurs. To determine the full effect, it may therefore be necessary to consider the price path many months, or even years, before the sale.

This paper generalizes Miller's supply-side equilibrium argument to other forms of capital market imperfections and incompleteness. If corporations possess a comparative advantage in dealing with these imperfections, they have an incentive to act as financial intermediaries. Corporations' attempts to profit from these intermediation activities dictate an optimal capital structure for the corporate sector as a whole, but in equilibrium the capital structure of any single firm is a matter of indifference. In addition, the positive role that corporate finance plays in completing the market restores standard perfect market results on asset pricing and the associated portfolio separation properties.

This paper extends Merton's intertemporal capital asset pricing model with multiple consumers to include a description of the supply of traded securities. The production decisions of firms are described in a model with stochastic investment opportunities and incomplete markets. Firms maximize the welfare of their stockholders based on the sum of dollar values placed on the projects by shareholders of the firm. The monetary value to stockholders of a marginal change in the contract structure due to changing firm production is analyzed. In this setting, the competitive market achieves an appropriately defined Nash-Constrained Pareto Optimum. Sufficient conditions for investor unanimity, market-value maximization by firms, and the equilibrium to achieve a Constrained Pareto Optimum and full Pareto Optimum are derived.