Cormac Butler is currently an active equity and options trader and a former consultant with Lombard Risk Systems London and has also worked with Peat Marwick and PricewaterhouseCoopers. He has considerable international experience as a training consultant in derivative accounting, Corporate Finance and Derivative Mathematics, working with major banks including Banque BNP Paribas. He has conducted in-house courses Morgan Stanley, PriceWaterhouseCoopers (Holland), Investec (South Africa) and ABB Switzerland and Asian Development Bank. In addition, he has worked for IIR and Euromoney in Singapore, Hong Kong, Thailand, America and Saudi Arabia. Cormac graduated from the University of Limerick, Ireland with a degree in Finance He has recently published Mastering Value at Risk (Financial Times Pitman) which is currently on the best sellers list (for Risk Management books) with Amazon.com, Gloriamundi.org and Financial World Bookshop (London). He has also published Accounting for Financial Instruments by Wiley.