How auditors test investment existence, ownership, valuation inputs, fair value hierarchy, and disclosures.
Investments can range from actively traded securities to complex Level 3 instruments valued with management assumptions. The auditor must test existence, rights, completeness, valuation, classification, and disclosure. The risk increases when markets are inactive, inputs are unobservable, or valuation models depend heavily on management judgment.
The AUD exam often tests the fair value hierarchy and the auditor’s response to valuation uncertainty. Quoted prices in active markets provide stronger evidence than internally developed discounted cash flow models. Complex investments may require specialists, but the auditor remains responsible for evaluating the evidence.
flowchart LR
A["Identify holdings"] --> B["Confirm with custodian or broker"]
B --> C["Classify fair value level"]
C --> D["Test valuation inputs"]
D --> E["Evaluate disclosures"]
E --> F["Conclude on investments"]
Investment testing should connect each procedure to the assertion at risk.
| Assertion | Risk | Common substantive response |
|---|---|---|
| Existence | Recorded investments are not held by the entity | Confirm holdings with custodians, brokers, or trustees |
| Rights | Investments are pledged, restricted, or not owned | Inspect custodial agreements, broker statements, debt covenants, and confirmations |
| Completeness | Investment accounts or derivatives are omitted | Review board minutes, bank statements, broker relationships, and investment income |
| Valuation | Fair value is misstated | Test quoted prices, pricing-service data, models, assumptions, and inputs |
| Cutoff | Purchases or sales are recorded in the wrong period | Inspect trade confirmations and settlement activity near year-end |
| Presentation | Classification or fair value hierarchy disclosure is wrong | Evaluate accounting classification, restrictions, and disclosure support |
Broker and custodian confirmations are strong evidence for existence and rights, but they do not automatically prove fair value when the instrument is complex or thinly traded.
The fair value hierarchy ranks inputs, not the investment itself. The auditor evaluates the inputs used in the measurement.
| Level | Input type | Audit implication |
|---|---|---|
| Level 1 | Quoted prices in active markets for identical assets or liabilities | Reconcile holdings to quoted market prices at the measurement date |
| Level 2 | Observable inputs other than Level 1 quoted prices | Test pricing-service data, yield curves, comparable instruments, or broker quotes |
| Level 3 | Significant unobservable inputs | Evaluate management’s model, assumptions, source data, sensitivity, and possible specialist evidence |
Level 3 valuations carry greater estimation uncertainty and management-bias risk. The auditor should understand the valuation method, test mathematical accuracy, evaluate assumptions, and compare inputs to available market or company-specific evidence.
The audit response depends on complexity.
| Investment type | Typical procedure |
|---|---|
| Public equity security | Agree quantity to confirmation and price to active market quote |
| Government bond | Confirm holding and test price using market yield or pricing service |
| Corporate bond | Evaluate credit risk, observable yields, and pricing service assumptions |
| Derivative | Inspect contract terms, confirm counterparty, and test model inputs |
| Private equity investment | Evaluate valuation method, comparable companies, cash flow forecasts, and discount rates |
| Restricted security | Evaluate transfer restrictions and disclosure or valuation effects |
If management uses a specialist, the auditor evaluates the specialist’s competence, capability, and objectivity, and then evaluates whether the specialist’s methods, assumptions, and source data are appropriate. The specialist’s report is evidence, not a substitute for auditor judgment.
Completeness testing looks for unrecorded accounts, positions, and derivatives. The auditor may review investment income, bank and brokerage statements, legal agreements, board minutes authorizing trades, and confirmations from known custodians.
Cutoff testing focuses on trade date, settlement date, and the reporting framework’s recognition rules. The auditor inspects trades near year-end and verifies that purchases, sales, gains, losses, and accrued interest are recorded in the proper period.
Fair value disclosures should align with the accounting records and valuation work. The auditor evaluates:
Disclosures are not a formality. Poor disclosure can create a material misstatement even if the recorded fair value is reasonable.
Do not assume a broker confirmation proves valuation for every instrument. It proves holdings more directly than model-based fair value.
Do not classify an item as Level 1 merely because it is an investment. Level 1 requires quoted prices in active markets for identical assets or liabilities.
Do not rely solely on management’s model for Level 3 assets. The auditor tests assumptions, data, and model mechanics.
Do not forget restrictions and pledges. They may affect rights, disclosure, and sometimes valuation.