We develop a parameterised model for liquidity effects arising from the trading in an asset. Liquidity is defined via a combination of a trader's individual transaction cost and a price slippage impact, which is felt by all market participants. The chosen definition allows liquidity to be...

This paper analyses multivariate high frequency financial data using realised covariation. We provide a new asymptotic distribution theory for standard methods such as regression, correlation analysis and covariance. It will be based on a fixed interval of time (e.g. a day or week), allowing the...

We analyse a general equilibrium model in which there is both adverse selection of and moral hazard by banks. The regulator has several tools at her disposal to combat these problems. She can audit banks to learn their type prior to giving them a licence, she can audit them ex post to learn the...

IPO initial returns reached astronomical levels during 1999-2000. We show that the regime shift in initial returns and other elements of pricing behavior can be at least partially accounted for by a variety of marked changes in pre-IPO ownership structure and insider selling behavior over the...

In this paper we show that profitable market manipulation via trade is possible if prices perform an allocational role. If market prices affect the real value of an asset (e.g. because they contain information relevant to a firm's investment decisions), a potentially informed speculator may wish...

In this paper we derive analytic expressions for the value of European Put and Call options when the stock process follows an exponential Levy-Stable process. It is shown that the generalised Black-Scholes operator for the Levy-Stable case can be obtained as an asymptotic approximation of a...

This paper examines the efficiency of stock based compensation by valuing stock and options from the executive's point of view. Companies give compensation in the form of stock in order to align incentives by providing a link between executive wealth and the stock price performance of the...

Regulation in the UK is undergoing fundamental change. Dissatisfaction with self-regulation and the self-regulatory organizations intensified steadily during the 1990's. The failure of regulation to avert the Maxwell pension collapse and the widespread selling of inappropriate pension policies...

We analyze exchange-rate management by the central bank when it makes the FX market for the sake of social-welfare objectives. It is assumed that markets are incomplete, so that agents are exposed to exchange-rate volatility against which they cannot fully hedge. It follows that the central bank...

In a study of the ownership of German corporations, we find a strong relation between board turnover and corporate performance, little association of concentrations of ownership with managerial disciplining and only limited evidence that pyramid structures can be used for control purposes. The...