In this article we show how a project's option value increases with incremental levels of investment and dis-investment flexibility. We do this by presenting two NPV and seven option pricing models in a strict sequence of increasing flexibility. We illustrate each with numerical examples and...

The Capital Asset Pricing Model (CAPM) assumes either that all asset returns are normally distributed or that investors have mean-variance preferences. Given empirical observations of asset returns, which document evidence of skewness and kurtosis, both assumptions are suspect. While several...

We compare forecasts of the realized volatility of the pound, mark and yen exchange rates against the dollar, calculated from intraday rates, over horizons ranging from one day to three months. Our forecasts are obtained from a short memory ARMA model, a long memory ARFIMA model, a GARCH model...

Asset price volatility appears to be more persistent than can be captured by individual, short memory, autoregressive or moving average components. Fractional integration offers a very parsimonious and tempting formulation of this long memory property of volatility but other explanations such as...

The aim of this paper is to establish a basic framework of financing with a highly flexible instrument, of Participating Mortgages (PMs), to improve the efficiency of the financial system. We distinguish these from convertible mortgages and derive closed-form solutions to price a whole framework...

This paper distinguishes Participating Mortgages (PMs) from Convertible Mortgages. We study variants of PMs to demonstrate that they have the potential of improving the efficiency of a financial system. We resort to closed-form formulae to price profit caps and floors identified in variants of...

This paper distinguishes Participating Mortgages (PMs) from Convertible Mortgages. We study variants of PMs to demonstrate that they have the potential of improving the efficiency of a financial system. We resort to closed-form formulae to price profit caps and floors identified in variants of...

We compare the long run reaction to anticipated and surprise information announcements using stock splits. Although there is underreaction in both cases, anticipated splits are treated differently to those that are unforeseen. After anticipated splits, cumulative abnormal returns peak at...

The study of Ferguson and Shockley (2003) shows that, if the Merton (1974) model can reflect reality, the omission of debt claims from the market portfolio proxy may explain the poor pricing ability of the CAPM in empirical tests. We critically re-assess this argument by first reviewing...

We compare density forecasts of the Samp;P 500 index from 1991 to 2004, obtained from option prices and daily and five-minute index returns. Risk-neutral densities are given by using option prices to estimate diffusion and jump-diffusion processes, that incorporate stochastic volatility, and...