Lecture Winter Term 2019/20:
Advanced Topics in Portfolio Optimization
(Advanced Topic)
Outline
15.10.2018
Part I: Convex extensions of the Markowitz portfolio selection problem
- Basic notions from convex optimization
- Criteria of convexity
- Classes of convex problems: LP, SOCP, SDP
- Duality
- Vector optimization: Pareto optimal solutions, Scalarization
- Introduction to the CVX solver (as extension to Matlab) as special solver for
- convex optimization problems
- Examples from finance and their numerical solution via CVX:
- Extensions of Markowitz portfolio selection problem and their convexification: incomplete information about covariance, probability constraints,
robust optimization
- Factor models
- Log-optimal investment strategy
- Sharpe ratio
Part II: Risk measures and decision models
- Basic notions and concepts
- Single-stage decision models
- Risk deviation functionals and their properties
- Standard and less standard risk measures
- More on Conditional value-at-risk
- Formulation of decision optimization models with different risk measures as
objectives and their transformation to LP
- Multi-stage decision models
- Multi-stage risk deviation functionals
- Formulation of multi-stage decision models, their transformation to linear programs, large-scale optimization
Part III: Hamilton-Jacobi-Bellman equation for dynamic portfolio optimization
problems
- Expected utility maximization problem
- Bellman's optimality principle and its application to the utility maximization
problem
- Deriving a Hamilton-Jacobi-Bellman (HJB) nonlinear partial differential equation
- Notes on standard ways of solving HJB equations
- Riccati-type of transformation to HJB equations
- Advantages of the transformed HJB equations
- Worst-case portfolio optimization using techniques from Part I
- Inter-temporal utility optimization in the HJB context