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A Practical Guide to Forecasting Financial Market Volatility. Edition No. 1. The Wiley Finance Series

  • ID: 2211432
  • Book
  • April 2005
  • 236 Pages
  • John Wiley and Sons Ltd
Financial market volatility forecasting is one of today's most important areas of expertise for professionals and academics in investment, option pricing, and financial market regulation. While many books address financial market modelling, no single book is devoted primarily to the exploration of volatility forecasting and the practical use of forecasting models. A Practical Guide to Forecasting Financial Market Volatility provides practical guidance on this vital topic through an in-depth examination of a range of popular forecasting models. Details are provided on proven techniques for building volatility models, with guide-lines for actually using them in forecasting applications.
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Foreword by Clive Granger xiii

Preface xv

1 Volatility Definition and Estimation 1

1.1 What is volatility? 1

1.2 Financial market stylized facts 3

1.3 Volatility estimation 10

1.3.1 Using squared return as a proxy for daily volatility 11

1.3.2 Using the high–low measure to proxy volatility 12

1.3.3 Realized volatility, quadratic variation and jumps 14

1.3.4 Scaling and actual volatility 16

1.4 The treatment of large numbers 17

2 Volatility Forecast Evaluation 21

2.1 The form of Xt 21

2.2 Error statistics and the form of εt 23

2.3 Comparing forecast errors of different models 24

2.3.1 Diebold and Mariano’s asymptotic test 26

2.3.2 Diebold and Mariano’s sign test 27

2.3.3 Diebold and Mariano’sWilcoxon sign-rank test 27

2.3.4 Serially correlated loss differentials 28

2.4 Regression-based forecast efficiency and orthogonality test 28

2.5 Other issues in forecast evaluation 30

3 Historical Volatility Models 31

3.1 Modelling issues 31

3.2 Types of historical volatility models 32

3.2.1 Single-state historical volatility models 32

3.2.2 Regime switching and transition exponential smoothing 34

3.3 Forecasting performance 35

4 Arch 37

4.1 Engle (1982) 37

4.2 Generalized ARCH 38

4.3 Integrated GARCH 39

4.4 Exponential GARCH 41

4.5 Other forms of nonlinearity 41

4.6 Forecasting performance 43

5 Linear and Nonlinear Long Memory Models 45

5.1 What is long memory in volatility? 45

5.2 Evidence and impact of volatility long memory 46

5.3 Fractionally integrated model 50

5.3.1 FIGARCH 51

5.3.2 FIEGARCH 52

5.3.3 The positive drift in fractional integrated series 52

5.3.4 Forecasting performance 53

5.4 Competing models for volatility long memory 54

5.4.1 Breaks 54

5.4.2 Components model 55

5.4.3 Regime-switching model 57

5.4.4 Forecasting performance 58

6 Stochastic Volatility 59

6.1 The volatility innovation 59

6.2 The MCMC approach 60

6.2.1 The volatility vector H 61

6.2.2 The parameter w 62

6.3 Forecasting performance 63

7 Multivariate Volatility Models 65

7.1 Asymmetric dynamic covariance model 65

7.2 A bivariate example 67

7.3 Applications 68

8 Black–Scholes 71

8.1 The Black–Scholes formula 71

8.1.1 The Black–Scholes assumptions 72

8.1.2 Black–Scholes implied volatility 73

8.1.3 Black–Scholes implied volatility smile 74

8.1.4 Explanations for the ‘smile’ 75

8.2 Black–Scholes and no-arbitrage pricing 77

8.2.1 The stock price dynamics 77

8.2.2 The Black–Scholes partial differential equation 77

8.2.3 Solving the partial differential equation 79

8.3 Binomial method 80

8.3.1 Matching volatility with u and d 83

8.3.2 A two-step binomial tree and American-style options 85

8.4 Testing option pricing model in practice 86

8.5 Dividend and early exercise premium 88

8.5.1 Known and finite dividends 88

8.5.2 Dividend yield method 88

8.5.3 Barone-Adesi and Whaley quadratic approximation 89

8.6 Measurement errors and bias 90

8.6.1 Investor risk preference 91

8.7 Appendix: Implementing Barone-Adesi and Whaley’s efficient algorithm 92

9 Option Pricing with Stochastic Volatility 97

9.1 The Heston stochastic volatility option pricing model 98

9.2 Heston price and Black–Scholes implied 99

9.3 Model assessment 102

9.3.1 Zero correlation 103

9.3.2 Nonzero correlation 103

9.4 Volatility forecast using the Heston model 105

9.5 Appendix: The market price of volatility risk 107

9.5.1 Ito’s lemma for two stochastic variables 107

9.5.2 The case of stochastic volatility 107

9.5.3 Constructing the risk-free strategy 108

9.5.4 Correlated processes 110

9.5.5 The market price of risk 111

10 Option Forecasting Power 115

10.1 Using option implied standard deviation to forecast volatility 115

10.2 At-the-money or weighted implied? 116

10.3 Implied biasedness 117

10.4 Volatility risk premium 119

11 Volatility Forecasting Records 121

11.1 Which volatility forecasting model? 121

11.2 Getting the right conditional variance and forecast with the ‘wrong’ models 123

11.3 Predictability across different assets 124

11.3.1 Individual stocks 124

11.3.2 Stock market index 125

11.3.3 Exchange rate 126

11.3.4 Other assets 127

12 Volatility Models in Risk Management 129

12.1 Basel Committee and Basel Accords I & II 129

12.2 VaR and backtest 131

12.2.1 VaR 131

12.2.2 Backtest 132

12.2.3 The three-zone approach to backtest evaluation 133

12.3 Extreme value theory and VaR estimation 135

12.3.1 The model 136

12.3.2 10-day VaR 137

12.3.3 Multivariate analysis 138

12.4 Evaluation of VaR models 139

13 VIX and Recent Changes in VIX 143

13.1 New definition for VIX 143

13.2 What is the VXO? 144

13.3 Reason for the change 146

14 Where Next? 147

Appendix 149

References 201

Index 215

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Ser-Huang Poon Manchester University, UK.
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