Module 12: Performance Evaluation
Performance Evaluation in CFA Level 3 focuses on measuring, analyzing, and interpreting portfolio performance.
Portfolio managers must not only generate returns but also evaluate:
- how returns were generated
- whether performance justifies the risk taken
- whether the strategy added value
This module helps in assessing portfolio manager skill and investment effectiveness.
Performance attribution is the process of identifying the sources of portfolio returns.
It helps determine whether returns were generated due to:
- asset allocation decisions
- security selection
- market movements
Sources of Returns
Portfolio returns can be broken down into different components.
Asset Allocation Effect
This measures the impact of allocating capital across different asset classes or sectors.
Example
Overweighting equities during a bull market may increase returns.
Security Selection Effect
This measures the impact of selecting individual securities.
Example
Choosing outperforming stocks within a sector generates positive selection effect.
Interaction Effect
This captures the combined impact of asset allocation and security selection decisions.
Importance of Performance Attribution
Performance attribution helps:
- evaluate portfolio manager skill
- identify strengths and weaknesses
- improve future investment decisions
Risk adjusted measures evaluate how much return is generated for the level of risk taken.
These metrics are essential for comparing different portfolios or managers.
Sharpe Ratio
The Sharpe ratio measures excess return per unit of total risk.
Sharpe Ratio Formula
Sharpe Ratio = (Portfolio Return − Risk Free Rate) / Standard Deviation
Interpretation
- higher Sharpe ratio indicates better performance
- useful for comparing portfolios with different risk levels
Information Ratio
The Information ratio measures excess return relative to a benchmark.
Information Ratio Formula
Information Ratio = (Portfolio Return − Benchmark Return) / Tracking Error
Key Concepts
Benchmark Return
Return of the market or index used for comparison.
Tracking Error
Standard deviation of the difference between portfolio and benchmark returns.
Interpretation
- higher information ratio indicates better active management
- measures consistency of outperformance
This module is important because it helps candidates:
- analyze portfolio performance
- evaluate manager effectiveness
- distinguish between skill and luck
- apply risk adjusted metrics
In CFA Level 3, questions often require candidates to interpret performance results and recommend improvements, making this a high scoring and application based module.