Empirical evidence indicates that trades by institutional investors have sizable effects on asset prices, generating phenomena such as index effects, asset-class effects and others. It is difficult to explain such phenomena within standard representative-agent asset pricing models. In this...

We study three cases in which specialized arbitrageurs lost significant amounts of capital and, as a result, became liquidity demanders rather than providers. The effects on security markets were large and persistent: Prices dropped relative to fundamentals and the rebound took months. While...

We investigate the question of whether sophistication in risk management fosters banking stability. We compare a simple banking system in which an average rating is used with a sophisticated banking system in which banks are able to assess the default risk of entrepreneurs individually. Both...

We analyse the demand for hedging and insurance by a firm that faces liquidity risk. The firm's optimal liquidity management policy consists of accumulating reserves up to a threshold and distributing dividends to its shareholders whenever its reserves exceed this threshold. We study how this...

This Paper studies predatory trading: trading that induces and/or exploits other investors’ need to reduce their positions. We show that if one trader needs to sell, others also sell and subsequently buy back the asset. This leads to price overshooting and a reduced liquidation value for the...

We model the interplay between cash and debt policies in the presence of financial constraints. While saving cash allows constrained firms to hedge against future cash flow shortfalls, reducing current debt – ‘saving borrowing capacity’ – is a more effective way of securing investment in...

The dangers of shouting ``fire'' in a crowded theater are well understood, but the dangers of rushing to the exit in the financial markets are more complex. Yet, the two events share several features, and I analyze why people crowd into theaters and trades, why they run, what determines the...

Financial crises are associated with reduced volumes and extreme levels of rates for term inter-bank transactions, such as in one-month and three-month LIBOR markets. We provide an explanation of such stress in term lending by modelling leveraged banks’ precautionary demand for liquidity. When...

Despite much work on hedging in incomplete markets, the literature still lacks tractable dynamic hedges in plausible environments. In this article, we provide a simple solution to this problem in a general incomplete-market economy in which a hedger, guided by the traditional minimum-variance...

This article presents an application of extreme value theory to compute the value at risk of a market position. In statistics, extremes of a random process refer to the lowest observation (the minimum) and to the highest observation (the maximum) over a given time-period. Extreme value theory...