We examine how non-competitiveness in financial markets affects the choice of asset portfolios and the determination of equilibrium prices. We apply a model of economic equilibrium, based on [12], in which individual traders recognize and estimate the impact of their trades on financial prices, and in which these effects are determined endogenously as part of the equilibrium concept. For the ca...

In this paper we extend the results of recent studies on the existence of equilibrium in finite dimensional asset markets for both bounded and unbounded economies. We do not assume that the individual’s preferences are complete or transitive. Our existence theorems for asset markets allow for short selling. We shall also show that the equilibrium achieves a constrained core within the same fram...

In a global economy, shocks occurring in one market can spill over to other markets. This paper investigates the impact of oil shocks and stock markets crashes on correlations between stock and oil markets. We test changes in correlations at different scales with non-overlapping confidence intervals based on estimated wavelet correlations. Contrary to other approaches, this method does not need...

This paper analyzes the role of money in asset markets characterized by search frictions. We develop a dynamic framework that brings together a model for illiquid financial assets à la Duffie, Gârleanu, and Pedersen, and a search-theoretic model of monetary exchange à la Lagos and Wright. The presence of decentralized financial markets generates an essential role for money, which helps investor...

We show that differences in investors risk aversion can generate herd behavior in stock markets where assets are traded sequentially. This in turn prevents markets from being efficient in the sense that Þnancial market prices do not converge to the asset’s fundamental value. The informational efficiency of the market depends on the distribution of the risky asset across risk averse agents. Thes...

The efects of trading institutions on market eficiency and trading volume are examined. The trading institutions are computerized versions of continuous double auction and "clearinghouse" markets. Traders are experienced, profit-motivated undergraduates. The traded good is afinancial asset whose moneta y value is stateand trader type-contingent. Traders possess asymmetric private information on...

Intellectual property (IP) rights differ from ordinary property rights. Historically, societies have tolerated monopolistic inefficiency from IP protection to incentivize intellectual asset creation. This paper considers how competitive markets can optimally allocate resources, bypassing that monopolistic inefficiency. It departs from earlier related work in three ways: First, it allows economi...

We propose a continuous time infinite horizon equilibrium model of financial markets in which arbitrageurs have multiple valuable investment opportunities but face financial constraints. The investment opportunities, heterogeneous along different dimensions, are provided by pairs of similar assets trading at different prices in segmented markets. By exploiting these opportunities, arbitrageurs ...

Recent turmoil on global financial markets has led to a discussion on which policy measures should or could be taken to stabilize financial markets. One such a measure that resurfaced is the imposition of short-selling constraints. It is conjectured that these shortselling constraints reduce speculative trading and thereby have the potential to stabilize volatile financial markets. The purpose ...

We design an experiment to compare investors’ final wealth distribution in a static setup and an equivalent dynamic setup. In the static setup investors can trade all risks since there are as many securities as states of the world. In the dynamic market there are too few securities for investors to achieve efficient final wealth holdings without re-trade. Information disclosure and the possibil...