General Equilibrium Oligopoly and Ownership Structure

Oligopoly and financial structure revisited

In this paper we employ a two stage Cournot duopoly model where firms can obtain outside funds only to finance production plans; payouts to shareholders are not allowed. Debt, equity and capacity are chosen in the first stage and output is chosen in the second stage. In contrast to the existing literature in this area, we show firms always choose zero debt in equilibrium. The two important impl...

The Structure of Applied General Equilibrium Models

A General Equilibrium Theory of Capital Structure∗

We develop a general equilibrium theory of the capital structures of banks and firms. The liquidity services of bank deposits make deposits a “cheaper” source of funding than equity. Banks pass on part of this funding advantage in the form of lower interest rates to firms that borrow from them. Firms and banks choose their capital structures to balance the funding of debt against the risk of co...

Concentrated Ownership and Equilibrium Asset Prices ∗

Investors can choose to hold diversified or levered, concentrated portfolios of risky assets. This paper studies the dynamics of asset prices in an economy in which both investment styles coexist in equilibrium even though all agents are ex-ante identical. I capture the tradeoff between risk sharing and productivity gains by introducing what I call “active capital.” People who participate in su...

Imitation Dynamic and Nash Equilibrium in Cournot Oligopoly with Capacities

The paper considers an imitation dynamic in the context of Cournot oligopoly. The pure ”imitate-the-best” behavior can lead to an outcome inconsistent with Cournot-Nash equilibrium. The paper extends purely imitative behavior to imperfect imitation in the two-stage model with capacities and prices. This variation in the imitative behavior improves efficiency and makes the Cournot-Nash equilibri...