# Risk and Financial Management: Mathematical and Computational Methods

ISBN: 978-0-470-84908-8
358 pages
April 2004
Financial risk management has become a popular practice amongst financial institutions to protect against the adverse effects of uncertainty caused by fluctuations in interest rates, exchange rates, commodity prices, and equity prices. New financial instruments and mathematical techniques are continuously developed and introduced in financial practice. These techniques are being used by an increasing number of firms, traders and financial risk managers across various industries. Risk and Financial Management: Mathematical and Computational Methods confronts the many issues and controversies, and explains the fundamental concepts that underpin financial risk management.
• Provides a comprehensive introduction to the core topics of risk and financial management.
• Adopts a pragmatic approach, focused on computational, rather than just theoretical, methods.
• Bridges the gap between theory and practice in financial risk management
• Includes coverage of utility theory, probability, options and derivatives, stochastic volatility and value at risk.
• Suitable for students of risk, mathematical finance, and financial risk management, and finance practitioners.
• Includes extensive reference lists, applications and suggestions for further reading.

Risk and Financial Management: Mathematical and Computational Methods is ideally suited to both students of mathematical finance with little background in economics and finance, and students of financial risk management, as well as finance practitioners requiring a clearer understanding of the mathematical and computational methods they use every day. It combines the required level of rigor, to support the theoretical developments, with a practical flavour through many examples and applications.

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Preface.

Part I: Finance and Risk Management.

Chapter 1: Potpourri.

1.1 Introduction.

1.2 Theoretical finance and decision making.

1.3 Insurance and actuarial science.

1.4 Uncertainty and risk in finance.

1.4.1 Foreign exchange risk.

1.4.2 Currency risk.

1.4.3 Credit risk.

1.4.4 Other risks.

1.5 Financial physics.

Chapter 2: Making Economic Decisions under Uncertainty.

2.1 Decision makers and rationality.

2.1.1 The principles of rationality and bounded rationality.

2.2 Bayes decision making.

2.2.1 Risk management.

2.3 Decision criteria.

2.3.1 The expected value (or Bayes) criterion.

2.3.2 Principle of (Laplace) insufficient reason.

2.3.3 The minimax (maximin) criterion.

2.3.4 The maximax (minimin) criterion.

2.3.5 The minimax regret or Savage’s regret criterion.

2.4 Decision tables and scenario analysis.

2.4.1 The opportunity loss table.

2.5 EMV, EOL, EPPI, EVPI.

2.5.1 The deterministic analysis.

2.5.2 The probabilistic analysis.

Chapter 3: Expected Utility.

3.1 The concept of utility.

3.1.1 Lotteries and utility functions.

3.2 Utility and risk behaviour.

3.2.1 Risk aversion.

3.2.2 Expected utility bounds.

3.2.3 Some utility functions.

3.2.4 Risk sharing.

3.3 Insurance, risk management and expected utility.

3.4 Critiques of expected utility theory.

3.4.1 Bernoulli, Buffon, Cramer and Feller.

3.5 Expected utility and finance.

3.5.2 Individual investment and consumption.

3.5.3 Investment and the CAPM.

3.5.4 Portfolio and utility maximization in practice.

3.5.5 Capital markets and the CAPM again.

3.5.6 Stochastic discount factor, assets pricing and the Euler equation.

3.6 Information asymmetry.

3.6.1 ‘The lemon phenomenon’ or adverse selection.

3.6.2 ‘The moral hazard problem’.

3.6.3 Examples of moral hazard.

3.6.4 Signalling and screening.

3.6.5 The principal–agent problem.

Chapter 4: Probability and Finance.

4.1 Introduction.

4.2 Uncertainty, games of chance and martingales.

4.3 Uncertainty, random walks and stochastic processes.

4.3.1 The random walk.

4.3.2 Properties of stochastic processes.

4.4 Stochastic calculus.

4.4.1 Ito’s Lemma.

4.5 Applications of Ito’s Lemma.

4.5.1 Applications.

4.5.2 Time discretization of continuous-time finance models.

4.5.3 The Girsanov Theorem and martingales*.

Chapter 5: Derivatives Finance.

5.1 Equilibrium valuation and rational expectations.

5.2 Financial instruments.

5.2.1 Forward and futures contracts.

5.2.2 Options.

5.3 Hedging and institutions.

5.3.1 Hedging and hedge funds.

5.3.2 Other hedge funds and investment strategies.

5.3.3 Investor protection rules.

Part II: Mathematical and Computational Finance.

Chapter 6: Options and Derivatives Finance Mathematics.

6.1 Introduction to call options valuation.

6.1.1 Option valuation and rational expectations.

6.1.2 Risk-neutral pricing.

6.1.3 Multiple periods with binomial trees.

6.2 Forward and futures contracts.

6.3 Risk-neutral probabilities again.

6.3.1 Rational expectations and optimal forecasts.

6.4 The Black–Scholes options formula.

6.4.1 Options, their sensitivity and hedging parameters.

6.4.2 Option bounds and put–call parity.

6.4.3 American put options.

Chapter 7: Options and Practice.

7.1 Introduction.

7.2 Packaged options.

7.3 Compound options and stock options.

7.3.1 Warrants.

7.3.2 Other options.

7.4 Options and practice.

7.4.1 Plain vanilla strategies.

7.4.2 Covered call strategies: selling a call and a share.

7.4.3 Put and protective put strategies: buying a put and a stock.

7.4.6 Strip and strap strategies.

7.4.7 Butterfly and condor spread strategies.

7.4.8 Dynamic strategies and the Greeks.

7.5 Stopping time strategies*.

7.5.1 Stopping time sell and buy strategies.

7.6 Specific application areas.

7.7 Option misses.

Appendix: First passage time*.

Chapter 8: Fixed Income, Bonds and Interest Rates.

8.1 Bonds and yield curve mathematics.

8.1.1 The zero-coupon, default-free bond.

8.1.2 Coupon-bearing bonds.

8.1.3 Net present values (NPV).

8.1.4 Duration and convexity.

8.2 Bonds and forward rates.

8.3 Default bonds and risky debt.

8.4 Rated bonds and default.

8.4.1 A Markov chain and rating.

8.4.2 Bond sensitivity to rates – duration.

8.4.3 Pricing rated bonds and the term structure risk-free rates*.

8.4.4 Valuation of default-prone rated bonds*.

8.5 Interest-rate processes, yields and bond valuation*.

8.5.1 The Vasicek interest-rate model.

8.5.2 Stochastic volatility interest-rate models.

8.5.3 Term structure and interest rates.

8.6 Options on bonds*.

8.6.1 Convertible bonds.

8.6.2 Caps, floors, collars and range notes.

8.6.3 Swaps.

Mathematical appendix.

A.1: Term structure and interest rates.

A.2: Options on bonds.

Chapter 9: Incomplete Markets and Stochastic Volatility.

9.1 Volatility defined.

9.2 Memory and volatility.

9.3 Volatility, equilibrium and incomplete markets.

9.3.1 Incomplete markets.

9.4 Process variance and volatility.

9.5 Implicit volatility and the volatility smile.

9.6 Stochastic volatility models.

9.6.1 Stochastic volatility binomial models*.

9.6.2 Continuous-time volatility models.

9.7 Equilibrium, SDF and the Euler equations*.

9.8 Selected Topics*.

9.8.1 The Hull and White model and stochastic volatility.

9.8.2 Options and jump processes.

9.9 The range process and volatility.

Appendix: Development for the Hull and White model (1987)*.

Chapter 10: Value at Risk and Risk Management.

10.1 Introduction.

10.2 VaR definitions and applications.

10.3 VaR statistics.

10.3.1 The historical VaR approach.

10.3.2 The analytic variance–covariance approach.

10.3.3 VaR and extreme statistics.

10.3.4 Copulae and portfolio VaR measurement.

10.3.5 Multivariate risk functions and the principle of maximum entropy.

10.3.6 Monte Carlo simulation and VaR.

10.4 VaR efficiency.

10.4.1 VaR and portfolio risk efficiency with normal returns.

10.4.2 VaR and regret.

Author Index.

Subject Index.

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"The strength of the book is its view of practical aspects and the focus on embedding mathematical finance in the daily work of traders." (Mathematical Reviews, 2005k)

“…has much to recommend it for the practitioner in risk or finance.” (Journal of the Royal Statistical Society, Series A, Vol.168, No.2, March 2005)

"...All in all, this book gives a refreshing approach..." (Short Book Review, Vol.24, No.3 December 2004)

"..this book will serve to give mathematicians an insight into financial decision making" (Zentralblatt MATH,  11th March 2007  )

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