Manager Due Diligence: Investment Edge and Operational Evidence
Manager selection requires evidence of a repeatable investment process, suitable portfolio fit and reliable operations. Test the people, performance record, valuation, custody, liquidity and terms before deciding whether to allocate.
The key decisions, at a glance
| Concept | What to do | Watch for |
|---|---|---|
| Investment thesis | Explain where returns should come from and when the strategy loses. | A high return number does not explain the source. |
| Track record | Reconcile net results, cash flows and the comparison universe. | Exited winners alone are not the full portfolio. |
| Operations | Verify independent checks, service providers and authority. | A famous manager can still have weak controls. |
| Terms and fit | Evaluate fees, liquidity, key-person terms and capacity. | A good strategy can be unsuitable for this investor. |
1. Investment thesis
Explain where returns should come from and when the strategy loses.
Watch for: A high return number does not explain the source.
2. Track record
Reconcile net results, cash flows and the comparison universe.
Watch for: Exited winners alone are not the full portfolio.
3. Operations
Verify independent checks, service providers and authority.
Watch for: A famous manager can still have weak controls.
4. Terms and fit
Evaluate fees, liquidity, key-person terms and capacity.
Watch for: A good strategy can be unsuitable for this investor.
Original worked case
The best return slide omits the unresolved deals
Given: A manager advertises a 2.0x multiple on five exited investments. Five unexited investments are omitted and represent 60% of invested capital.
01 Define the population
The slide covers only a subset of the capital.
02 Request the missing evidence
Obtain full dated cash flows, remaining values and valuation policies.
03 Reassess comparability
Compare complete-fund net metrics with suitable vintage and strategy peers.
Answer and interpretation
The slide cannot support a whole-fund performance conclusion. Selection should wait for a complete, reconcilable record.
Change one assumption
Even a complete 2.0x record does not show whether returns came from leverage, market exposure, valuation marks or repeatable skill.
Independent teaching example with the stated assumptions. Not an official exam question, marking key or observed market trend.
Understand the method
Part 1
Screen for mandate fit before ranking performance
Define the role the manager is supposed to fill: exposure, return objective, downside tolerance, liquidity and capacity. A manager can be excellent at a strategy that does not fit the institution’s portfolio. Screening against the mandate prevents impressive historical performance from distracting the selection process from the actual allocation need.
Translate the strategy into an economic explanation. Identify who is expected to pay for the return, what market inefficiency or risk premium is targeted and why the manager can capture it after costs. Ask what conditions would invalidate the thesis. A process that cannot explain its failure conditions is difficult to size, monitor or compare with alternatives.
Part 2
Reconstruct the track record on a comparable basis
Establish the population, dates, cash flows, valuation policies, fees and leverage behind reported results. Distinguish live performance from backtests, representative accounts from selected winners and individual experience from a portable institutional record. Check whether the same team and process that produced the history will manage the proposed mandate.
Use attribution and stress analysis to understand how the returns arose. Strong results could reflect beta, leverage, favourable market conditions or genuine implementation skill. For private funds, compare maturity and the split between realized proceeds and residual valuations. Seek independent corroboration of material figures rather than treating a polished performance presentation as sufficient evidence.
Part 3
Operational diligence can change an otherwise attractive decision
Investment skill does not compensate for an inability to establish ownership of assets, control payments or produce reliable valuations. Review custody, administration, cash movement, reconciliation, valuation governance, access controls and business continuity. Identify incompatible duties and the independent checks that constrain them. A small team can be capable, but concentration of authority must be addressed explicitly.
Evaluate the manager’s business as well as the portfolio. Financial viability, key-person dependence, staff turnover and service-provider relationships can affect continuity. Test what happens if a critical person or provider becomes unavailable. An unresolved operational issue should have a decision consequence, such as a condition, limit or rejection, rather than being averaged away by a high investment score.
Part 4
Convert findings into terms, conditions and monitoring
Fees, liquidity, reporting rights, key-person provisions and governance terms determine the investor’s actual experience. Check that the fund’s promises are consistent with its assets and operating capacity. Side arrangements may also affect fairness and access to information. Compare the net proposition with the next-best implementable alternative, not only with an idealized gross strategy.
The final recommendation should distinguish disqualifying issues, conditions that must be completed before funding, and risks accepted with monitoring. Name an owner and trigger for each continuing concern. Selection is the beginning of a relationship: changes in personnel, exposures, terms or control quality should lead to a documented review rather than automatic renewal based on past approval.
A selection decision needs more than a score
Mandate and process
- Evidence
- Repeatable thesis, capacity and failure conditions
- Decision consequence
- Fit or reject for the intended role
Performance
- Evidence
- Reconciled returns, attribution and cash flows
- Decision consequence
- Assess confidence in the claimed edge
Operations
- Evidence
- Independent asset and control verification
- Decision consequence
- Resolve material control gaps before funding
Terms and monitoring
- Evidence
- Negotiated rights and observable triggers
- Decision consequence
- Approve with defined conditions and oversight
More worked practice
Original teaching cases. Use the stated assumptions; these are not official exam questions or marking keys.
A higher-return manager fails an essential control test
Given: Manager A has the stronger reported return, but one employee can both change payment instructions and authorize transfers. Manager B has lower reported return and independently verified dual authorization.
- 1Confirm the scope and operation of A’s controls rather than assuming the description is complete.
- 2Assess the unresolved cash-movement exposure as a potential funding blocker, not merely a small score deduction.
- 3Request a verified remedy or select another manager if the risk cannot be accepted under the mandate.
Interpretation: Manager selection is not a simple return ranking. A material operational weakness can outweigh an attractive investment record, and any exception needs explicit authority and evidence.
Check your understanding
Answer first, then open the explanation. These checks are original practice and do not generate an exam score.
1. Why separate a backtest from a live track record?
A backtest can benefit from hindsight, data selection and unrealistic implementation assumptions that were not available in live decisions.
2. Can several good scores cancel a critical custody problem?
Not automatically. Some issues are decision gates because their failure can threaten the entire investment.
3. What makes post-investment monitoring useful?
Observable triggers, reliable information, a named owner and a defined response linked to the original investment thesis and risks.
Common questions
Is a completed questionnaire enough?
No. It is a starting point. Material claims should be reconciled to supporting evidence and followed up where inconsistencies remain.
Should the highest-return manager always be selected?
No. Consider risk, costs, capacity, portfolio fit, completeness of the record and operational reliability.
Sources and scope
The sources below establish their stated framework or subject context. Calculations and cases are our own teaching material; these sources do not endorse them or establish complete exam coverage.
- AIMA: Investment manager due diligence questionnaires
Industry due diligence framework. Our workpapers are original examples, not reproduced AIMA templates.
- CAIA curriculum and study tools
Official curriculum, companions and required readings for the exam year. The current page now links to 2027 materials.
- ILPA: Principles and best practices
Alignment, governance and transparency in private fund relationships. Our fee and transaction cases use independently stated terms.
- SEC Investor.gov: Hedge funds
Leverage, fees and redemption restrictions. Individual fund contracts determine the actual terms.
- CAIA 2027 curriculum overview
Published topic categories and Emerging Topics reading titles for 2027. The overview is not the complete learning-objective list.
By MiloPrep editorial team. Updated 10 October 2026. Independent study notes, not affiliated with or endorsed by CAIA Association. How we prepare our content.
Notes
- * Study scope: Selected study concepts, not complete curriculum coverage. Match your sitting to the official exam-year materials; CAIA’s current resource page now links to 2027. ↩ Return to content