This paper develops a parametric model for liquidity effects due to trading. The liquidity parameterisation is defined to consist of a transaction cost effect and a price slippage effect, the latter felt by all participants in the market. The model is based on the CRR binomial trees and is...

Two of the authors (DE and PW) recently introduced a non-probabilistic spot interest rate model. The key concepts in this model are the non-diffusive nature of the spot rate process and the uncertainty in the parameters. The model assumes the worst possible outcome for the spot rate path when...

In this paper we suggest derivative contracts related to the Greeks of options; we show how to value them and how they can be used to manage the risk of a portfolio of derivatives. We further describe certain types of these options, namely those related to the Delta and Gamma, which can be...

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...

In an economy with a fixed exchange rate regime that suffers a random adverse shock, we study the strategies of imperfectly and sequentially informed speculators that may trigger an endogenous devaluation before it occurs exogenously. The game played by the speculators has a unique symmetric...

We propose a multivariate realised kernel to estimate the ex-post covariation of log-prices. We show this new consistent estimator is guaranteed to be positive semi-definite and is robust to measurement noise of certain types and can also handle non-synchronous trading. It is the first estimator...

This paper reports a new test of capital structure theories. It uses a filtering technique to identify large investment spikes. We find that the spikes are predominantly financed with debt by large firms and with new equity by small firms. In the process of financing large projects, firms move...

Family ownership was rapidly diluted in the twentieth century in Britain. Issuance of equity in the process of acquisitions was the main cause. In the first half of the century, it occurred in the absence of minority investor protection and relied on directors of target firms protecting the...

In this paper we introduce a decomposition of the joint distribution of price changes of assets recorded trade-by-trade. Our decomposition means that we can model the dynamics of price changes using quite simple and interpretable models which are easily extended in a great number of directions,...

In this paper we present a new model for pricing and hedging a portfolio of derivatives that takes into account the effect of an extreme movement in the underlying. We make no assumptions about the timing of this 'crash' or the probability distribution of its size, except that we put an upper...