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Book Categories |
List of Tables | ||
List of Figures | ||
1 | Arbitrage-Free Modelling of Effective Interest Rates | 1 |
1.1 | Elements of Arbitrage Theory and Derivative Pricing | 1 |
1.1.1 | Arbitrage-free Systems, Self-Financing Trading Strategies, Complete Markets | 1 |
1.1.2 | Derivative Claim Pricing in Different Measures | 7 |
1.2 | Modelling of Effective Forward Rates | 9 |
1.2.1 | Libor Rate Processes and Measures | 9 |
1.2.2 | Swap Rate Processes and Measures | 15 |
1.3 | Pricing of Caps and Swaptions in Libor and Swap Market Models | 18 |
1.3.1 | Libor Caps and Caplets | 18 |
1.3.2 | Swaptions in a Swap Market Model | 19 |
1.3.3 | Approximating Swaptions in a Libor Market Model | 20 |
1.3.4 | Smile/Skew Extensions of the Libor Market Model | 23 |
2 | Parametrisation of the Libor Market Model | 25 |
2.1 | General Volatility Structures | 25 |
2.2 | (Quasi) Time-Shift Homogeneous Models | 27 |
2.2.1 | Correlation Structures from Correlation Functions | 27 |
2.2.2 | Finitely Decomposable Correlation Functions | 27 |
2.2.3 | Ratio Correlation Structures and Functions | 28 |
2.2.4 | LMM with Piece-wise Constant Volatility Structure | 30 |
2.2.5 | Modified Hull-White Volatility Structure | 32 |
2.2.6 | Parametric Scalar Volatility Function | 34 |
2.3 | Parametrisation of Correlation Structures | 34 |
2.3.1 | A Disadvantage of Low Factor Models | 34 |
2.3.2 | Semi-parametric Framework for Libor Correlations | 36 |
2.3.3 | Representation Theorems | 38 |
2.3.4 | Generation of Low Parametric Structures | 42 |
2.3.5 | Parametric Low Rank Structures | 45 |
2.4 | Some Possible Applications of Parametric Structures | 47 |
2.4.1 | Smoothing Historical Libor Correlations (sketch) | 47 |
2.4.2 | Calibration to Caps and Swaptions by Using Historical Correlations (sketch) | 48 |
3 | Implied Calibration of a Libor Market Model to Caps and Swaptions | 49 |
3.1 | Orientation and General Aspects | 49 |
3.2 | Assessment of the Calibration Problem | 51 |
3.2.1 | Straightforward Least Squares, Stability Problems | 52 |
3.2.2 | Stability Problems in the Laboratory | 53 |
3.3 | LSq Calibration and Stability Issues in Practice | 56 |
3.3.1 | Transformation of Market Data and LSq Implementation | 57 |
3.3.2 | LSq Calibration Studies, Stability Problems in Practice | 59 |
3.4 | Regularisation via a Collateral Market Criterion | 64 |
3.4.1 | Market Swaption Formula (MSF) | 64 |
3.4.2 | Incorporation of the MSF in the Objective Function | 67 |
3.4.3 | MSF Calibration Tests, Regularisation of the Volatility Function | 70 |
3.4.4 | Calibration of Low Factor Models | 74 |
3.4.5 | Implied Calibration to Swaptions Only | 74 |
3.5 | Calibration of a Time-Shift Homogeneous LMM | 76 |
3.5.1 | Volatility Structure of Hull-White | 76 |
3.5.2 | Quasi Time-Shift Homogeneous Volatility Structure | 81 |
4 | Pricing of Exotic European Style Products | 87 |
4.1 | Exotic European Style Products | 87 |
4.1.1 | Libor Trigger Swap | 87 |
4.1.2 | Ratchet Cap | 88 |
4.1.3 | Sticky Cap | 89 |
4.1.4 | Auto-flex Cap | 89 |
4.1.5 | Callable Reverse Floater | 90 |
4.2 | Factor Dependence of Exotic Products | 91 |
4.3 | Case Studies | 94 |
5 | Pricing of Bermudan Style Libor Derivatives | 103 |
5.1 | Orientation | 103 |
5.2 | The Bermudan Pricing Problem | 104 |
5.3 | Backward Construction of the Exercise Boundary | 106 |
5.4 | Iterative Construction of the Optimal Stopping Time | 109 |
5.4.1 | A One Step Improvement upon a Given Family of Stopping Times | 109 |
5.4.2 | Iterating to the Optimal Stopping Time and the Snell Envelope | 112 |
5.4.3 | On the Implementation of the Iterative Procedure | 116 |
5.5 | Duality; From Tight Lower Bounds to Tight Upper Bounds | 118 |
5.5.1 | Dual Approach | 118 |
5.5.2 | Converging Upper Bounds from Lower Bounds | 119 |
5.6 | Monte Carlo Simulation of Upper Bounds | 122 |
5.7 | Numerical Evaluation of Bermudan Swaptions by Different Methods | 124 |
5.8 | Efficient Monte Carlo Construction of Upper Bounds | 126 |
5.8.1 | Alternative Estimators for the Target Upper Bound | 126 |
5.8.2 | Two Canonical Approximative Processes | 130 |
5.8.3 | Numerical Upper Bounds for Bermudan Swaptions | 131 |
5.9 | Multiple Callable Structures | 138 |
5.9.1 | The Multiple Stopping Problem | 138 |
5.9.2 | Iterative Algorithm for Multiple Bermudan Products | 140 |
6 | Pricing Long Dated Products via Libor Approximations | 145 |
6.1 | Introduction | 145 |
6.2 | Different Lognormal Approximations | 146 |
6.2.1 | More Lognormal Approximations | 149 |
6.2.2 | Simulation Analysis of Different Libor Approximations | 152 |
6.3 | Direct Simulation of Lognormal Approximations | 154 |
6.3.1 | Random Field Simulation of the (g)-approximation | 154 |
6.3.2 | Simulation of the (g1'), (g1), and (g2)-approximation | 162 |
6.3.3 | Cost Analysis of Euler SDE Simulation and Direct Simulation Methods | 163 |
6.4 | Efficiency Gain with Respect to SDE Simulation; an Optimal Simulation Program | 168 |
6.4.1 | Simulation Alternatives | 168 |
6.4.2 | An Optimal Simulation Program | 171 |
6.5 | Practical Simulation Examples | 172 |
6.5.1 | European Swaption | 172 |
6.5.2 | Trigger Swap | 173 |
6.5.3 | Callable Reverse Floater | 174 |
6.6 | Summarisation and Final Remarks | 175 |
A | Appendix | 177 |
A.1 | Glossary of Stochastic Calculus | 177 |
A.1.1 | Stochastic Processes in Continuous Time | 177 |
A.1.2 | Martingales and Stopping Times | 178 |
A.1.3 | Quadratic Variation and the Ito Stochastic Integral | 179 |
A.1.4 | Regular Conditional Probability | 183 |
A.2 | Minimum Search Procedures | 184 |
A.2.1 | Halton Quasi-random Numbers | 184 |
A.3 | Additional Proofs | 187 |
A.3.1 | Covariance of Two Black-Scholes Models | 187 |
A.3.2 | Proof of Equality (5.26) | 188 |
A.3.3 | Proof of Proposition 5.2 | 189 |
A.3.4 | Proof of Proposition 5.3 | 190 |
References | 193 | |
Index | 199 |
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