參考答案
I start by classifying the valuation into Level 2 or Level 3 based on the observability of inputs, because that dictates the evidence required. For Level 2, I focus on validating pricing sources, market comparables, and observable inputs like yield curves, credit spreads, or quoted prices for similar instruments. For Level 3, I go deeper into model governance, unobservable inputs, and management judgment—cash flow forecasts, terminal values, discount rates, and calibration. I test the completeness and accuracy of underlying data, evaluate model reasonableness, and perform sensitivity analysis. I bring in valuation specialists when instruments are complex, the inputs are highly judgmental, the amounts are material, or when I need expertise to evaluate models and market assumptions. I also ensure disclosures appropriately describe valuation techniques and sensitivity.