One of the early examples of stochastic volatility models is Clark [1973]. He suggested that asset price movements should be tied to the rate at which transactions occur. To accomplish this, he made a distinction between transaction time and calendar time. This framework has hitherto been...

This paper studies the conditions for aggregation, portfolio separation and effective completeness of competitive allocations in general equilibrium models with incomplete markets in which agents have general preference and endowment distributions. We show that these properties are distinct....

This is a leisurely introduction, in the vein of a piece in the history of science, to belated publication of my well-known paper on incomplete Markets, Competitive Equilibrium with Incomplete Financial Markets.

This is my classic paper, written in early 1984, concerning existence and optimality in general financial equilibrium with incomplete markets for nominal assets, just now being published in a special issue of the Journal of Mathematical Economics.

International capital flows have increased dramatically since the 1980s, with much of the increase being due to trade in equity and debt markets. Such developments are often attributed to the increased integration of world financial markets. We present a model that allows us to examine how...

This paper presents a new numerical method for solving general equilibrium models with many assets. The method can be applied to models where there are heterogeneous agents, time-varying investment opportunity sets, and incomplete markets. It also can be used to study models where the...

In this paper, the authors study the possibility of controlling asset price volatility through financial innovation in a three-period finite competitive exchange economy with incomplete financial markets and retrading.

Short and long run production is introduced in a two period general equilibrium model with incomplete markets, where firms are profit maximizers. They maximize profits in the long run, which implies profit maximization over both periods. The sequential structure of the model is such that, firms...

In an open economy, outside money in positive supply does not eliminate the real indeterminacy which arises under uncertainty and incomplete asset markets. If money supply is subject to shocks or is not perfectly credible in all countries, the level of a fixed exchange rate matters. Analogous...

We consider a general equilibrium model with incomplete financial markets and nominal assets. Asset prices are given. Let D be the number of "missing" assets. If the number of agents is greater than 2(D+ 1) and the number of period zero commodities greater than (2D + 1), there is a dense,...