Price discrepancies, although at odds with mainstream finance, are persistent phenomena in financial markets. These apparent mispricings lead to the presence of ‘arbitrageurs’, who aim to exploit the resulting profit opportunities, but whose role remains controversial. This article...

We investigate the interplay between asset prices, wealth inequality, and taxation in a dynamic general equilibrium economy populated by multiple agents with heterogeneous risk aversions. Tax revenues are collected from consumption taxes and are equally redistributed to all investors through...

We investigate the role of quot;arbitrageurs,quot; who exploit price discrepancies between redundant securities. Arbitrage opportunities arise endogenously in an economy populated by rational, heterogeneous investors facing investment restrictions. We show that an arbitrageur alleviates these...

This paper undertakes a comparative study of portfolio insurance under a variety of modelling strategies. Specifically, we focus on portfolio insurers who drive utility from horizon wealth, with marginal utility tending smoothly to infinity at some pre-specified floor. We solve for the optimal...

This article analyzes the dynamic portfolio choice implications of strategic interaction among money managers, arising as they compete for fund flows. We study such interaction between two risk-averse managers in continuous time, characterizing analytically their unique equilibrium investments....

This article studies an economy with borrowers (firms or individuals) under costly default. Borrowers defaulting under adverse economic conditions may, despite incurring default costs, emerge as wealthier than nonborrowers. Asset substitution is generally not pronounced, although a larger risk...

Price discrepancies, although at odds with mainstream finance, are persistent phenomena in financial markets. These apparent mispricings lead to the presence of arbitrageurs, who aim to exploit the resulting profit opportunities, but whose role remains controversial. This article investigates...

This article studies an economy with borrowers (firms or individuals) under costly default. Borrowers defaulting under adverse economic conditions may, despite incurring default costs, emerge as wealthier than nonborrowers. Asset substitution is generally not pronounced, although a larger risk...

This article analyzes optimal, dynamic portfolio and wealth/consumption policies of utility maximizing investors who must also manage market-risk exposure using Value-at-Risk (VaR). We find that VaR risk managers often optimally choose a larger exposure to risky assets than non risk managers,...

We develop a tractable model of costly stock short-selling and lending market within a familiar dynamic asset pricing framework. The model addresses the vast empirical literature in this market and generates implications that support many of the empirical regularities. In the model, investors'...