11.6 Portfolio Case Lab
Key Takeaways
- Integrated portfolio questions reward sorting facts (objective), preferences (subjective), and proposed actions, then matching the action to the IPS.
- Always diagnose the actual problem - return gap, concentration, liquidity, tax, behavioral bias, benchmark risk, or weak data - before selecting a tool.
- The best recommendation fits objectives, constraints, and risk exposures; complexity and recent performance are weak substitutes for suitability.
- This chapter integrates MPT/CAPM risk, IPS planning, the risk framework, behavioral diagnosis, and fintech governance.
Integrated portfolio reasoning
Portfolio Management is weighted 8-12% of the CFA Level I exam (roughly 14 to 22 of the 180 questions, split across two 135-minute sessions). Questions often pack several ideas into one short stem: a client needs retirement income, dislikes losses, holds concentrated stock, faces taxes, and asks about an AI-driven strategy. The correct answer comes from organizing the facts, not reacting to the most vivid detail.
Start with the investor. Identify the return objective (required versus desired), risk tolerance (ability versus willingness), and the five constraints (liquidity, time horizon, taxes, legal/regulatory, unique). Then diagnose the portfolio problem and match the tool. Because each stand-alone question is independent at Level I - there are no multi-question vignettes until Level II - you must extract everything you need from a single short paragraph, so disciplined fact-sorting under time pressure (roughly 90 seconds per question) is the real skill being tested.
Sort every stem into three buckets:
| Bucket | Contents | Role |
|---|---|---|
| Objective facts | Age, assets, liabilities, spending, horizon, tax/legal status | Define ability and constraints |
| Subjective preferences | Comfort with loss, desire for a specific asset | Inform willingness |
| Proposed actions | The recommendations in the answer choices | Must be tested against the first two |
| Case clue | Interpretation | Likely response |
|---|---|---|
| Large single-stock position | Unsystematic concentration risk | Phased diversification, mindful of taxes/restrictions |
| Near-term spending need | Liquidity constraint | Cash reserve or short-duration assets |
| Fear after recent losses | Low willingness / loss aversion | Revisit IPS risk range; educate |
| High desired return | Possible objective conflict | Test feasibility vs risk tolerance |
| Model output built on poor data | Governance/data problem | Validate inputs before acting |
A worked multi-issue case
A 58-year-old executive plans to retire in four years. Most net worth sits in employer stock (subject to a trading-window restriction). The investor wants "equity-like returns" but says a 10% loss would be unacceptable and needs cash for a house purchase within 12 months.
The facts conflict, and naming each conflict is the exam skill:
- The concentrated employer stock is unsystematic concentration risk plus single-employer human-capital overlap (job and wealth tied to one firm).
- The 12-month house purchase is a hard liquidity and short-horizon constraint.
- The "10% loss unacceptable" statement signals low willingness to bear risk.
- The "equity-like returns" desire is likely infeasible once liquidity and risk tolerance are respected - a required-versus-desired-return conflict.
An appropriate plan: (1) draft or update the IPS; (2) carve out liquid, capital-stable assets for the house deposit; (3) diversify the employer stock over time, sequenced around the trading window and capital-gains tax, possibly using a collar or staged sales; (4) set a strategic allocation at a risk level the investor can actually hold through a drawdown. The wrong answer simply buys a high-return fund or an exotic hedge that ignores the liquidity and concentration realities.
Notice how each prior section contributes one piece. Section 11.1 tells you the employer stock carries diversifiable risk that earns no premium, so reducing it is value-neutral on expected return but risk-reducing. Section 11.2 supplies the IPS framework that classifies the house deposit as a liquidity-plus-horizon constraint and the loss statement as a risk-tolerance input. Section 11.3 names the controls - cash reserve for liquidity, staged sales or a collar (risk shifting) for the concentration.
Section 11.4 diagnoses the "10% loss is unacceptable" remark as loss aversion and the attachment to employer stock as an endowment/familiarity bias, suggesting a phased, communicated plan rather than a forced full liquidation. Section 11.5 warns that any optimizer output for this client must respect the hard constraints rather than chase the highest modeled return.
Common distractors
| Distractor type | Why it is tempting | Why it fails |
|---|---|---|
| Sophisticated product (derivatives, private fund, ML signal) | Sounds expert | Does not address the stem's liquidity/concentration problem |
| Recent outperformance | Performance chasing feels safe | Mandate, risk, fees, or fit may be wrong; investing is forward-looking |
| Highest expected return | Maximizes one number | Violates risk tolerance and constraints |
Answer workflow
| Step | Candidate action |
|---|---|
| 1. Read for role | Individual, institution, fund, adviser, or analyst |
| 2. Mark objectives | Required return, desired return, risk tolerance |
| 3. Mark constraints | Time, liquidity, taxes, legal, unique |
| 4. Diagnose risk | Diversifiable, systematic, liquidity, behavioral, or model |
| 5. Select action | The recommendation tied to policy and facts |
Final habit: before choosing, ask "which fact in the stem makes this answer correct?" If the choice is only generally attractive, it is probably a trap. Watch the qualifier words too - Level I answers often hinge on most likely, least appropriate, or best described as, and the examiners design two plausible distractors plus one defensible answer, so the discipline is choosing the choice that survives every constraint rather than the one that simply sounds good.
This chapter's ideas work together. MPT and CAPM explain how risk is priced and why only systematic risk earns a premium; the IPS defines what the portfolio must do and classifies objectives versus constraints; the risk-management framework keeps exposures aligned with tolerance and capacity; behavioral finance explains and diagnoses the decision errors that derail otherwise sound plans; and fintech adds scale, data, and analysis - provided governance, validation, and suitability stay in command.
A candidate who can move cleanly from facts to objectives to constraints to a diagnosed risk to a policy-fitting action will handle the integrated questions that the Portfolio Management topic is designed to test.
An investor needs a fixed sum for a home purchase in 10 months and, after a strong equity year, asks to put that cash into stocks. The most appropriate response is to:
In the executive case, most net worth is in employer stock that is also the source of the client's salary. The most complete description of the risk is:
Across an integrated portfolio case, the best recommendation is generally the one that: