Explanation
Correct Answer: A
A successful portfolio risk budget will most likely be based on multiple sources of risk.
Why Option A is Correct:
- Comprehensive Risk Management: A risk budget should consider various risk sources including market risk, credit risk, liquidity risk, operational risk, and specific risk factors relevant to the portfolio.
- Diversification Benefits: By considering multiple risk sources, the portfolio can be better diversified across different risk dimensions.
- Holistic Approach: Modern portfolio theory emphasizes that risk budgeting should account for correlations and interactions between different risk factors, not just a single measure of risk.
- Practical Implementation: In practice, successful risk budgeting involves decomposing total portfolio risk into contributions from various asset classes, strategies, and risk factors.
Why Option B is Incorrect:
- Risk budgeting is primarily about risk management and allocation, not about guaranteeing superior performance compared to passive investing.
- Passive investing can be part of a risk-budgeted portfolio, and risk budgeting doesn't inherently promise outperformance.
- Performance depends on many factors beyond just risk budgeting.
Why Option C is Incorrect:
- While risk budgeting considers risk-adjusted returns, it doesn't necessarily lead to investing only in assets with the highest return per unit of risk.
- Risk budgeting is about allocating risk across the portfolio according to investment objectives and constraints, not just maximizing Sharpe ratios.
- It involves trade-offs between different risk factors and may include assets with varying risk-return profiles to achieve diversification.
Key Concepts:
- Risk Budgeting: The process of allocating a portfolio's total risk to different components (asset classes, strategies, managers) based on investment objectives.
- Multiple Risk Sources: Includes systematic risk, idiosyncratic risk, factor risks, currency risk, etc.
- Risk Parity: An approach that allocates risk equally across portfolio components rather than allocating capital equally.
Note: The question asks what a successful portfolio risk budget will "most likely" do, making Option A the most accurate description of effective risk budgeting practices.
