Community Q&A
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How can a company improve its cash conversion cycle?
The cash conversion cycle equals DIO + DSO - DPO. Each component offers distinct improvement levers from inventory management to collections to payables.
What metrics measure supplier bargaining power?
Measure supplier power via HHI, cost share, switching costs, forward integration threat, uniqueness, and supplier margin expansion.
How does portable alpha work when you use index futures to transport alpha?
Put $500M in market-neutral fund plus S&P futures overlay. Total return = SOFR + alpha + S&P excess. Watch beta drift, margin, and basis risk.
What is a 'big bath' in earnings management, and why would management intentionally make a bad year worse?
A big bath involves deliberately inflating current-period losses through aggressive write-downs, restructuring charges, and expense acceleration. This depresses the current year but artificially boosts future earnings through lower depreciation, reserve reversals, and reduced expense base.
What is the difference between pro forma earnings and GAAP earnings, and why should analysts be cautious with pro forma figures?
Pro forma earnings exclude items management deems non-recurring or non-core, often producing higher figures than GAAP. While sometimes useful for isolating ongoing performance, analysts should scrutinize whether excluded items truly are non-recurring and whether stock-based compensation represents a real cost to shareholders.
What are the main methodologies for aggregating risks across different risk types and business units?
Aggregation methods range from simple summation to copula-based Monte Carlo, balancing diversification capture with tail risk realism and regulatory constraints.
How do I calculate the duration gap for a bank balance sheet?
Duration gap = D_A - (L/A) * D_L, where D_A is the dollar-weighted duration of assets, D_L is the dollar-weighted duration of liabilities.
How do I quantify the opportunity cost of unexecuted trades?
Opportunity cost is (close − decision price) × unfilled shares. It captures the return missed on unexecuted portions and is essential to the implementation shortfall framework.
What is the arrival price benchmark and when is it used?
Arrival price is the mid when an order reaches the desk. It isolates execution-team controllable cost, separating desk performance from PM delay.
How does counterparty credit risk specifically differ from issuer default risk?
Consider two exposures to hypothetical Briardale Holdings: Bond vs Swap. Five key differences: exposure magnitude (face value vs MtM), direction uncertainty (always asset vs flip direction), time variation (declining vs tent-shaped)...
What is a liquidity horizon and how does FRTB assign them?
Liquidity horizons are FRTB's regulatory days-to-exit (10/20/40/60/120) applied to risk factors. Illiquid factors get longer horizons, scaling ES and capital.
How do auto loan ABS work and what credit enhancement is typical?
Auto loan ABS pool retail loans into senior/subordinate notes supported by subordination, overcollateralization, reserves, and excess spread. Short loss curves and essential-asset collateral make them resilient.
What is stratified sampling and when should I use it in option pricing?
Stratified sampling divides the sampling space into strata and allocates samples proportionally, ensuring tail regions get representation...
How should a model inventory be structured under SR 11-7?
A compliant model inventory captures ID, classification, tier, ownership, technical metadata, validation status, and performance. It drives validation planning and findings tracking.
What's the Monte Carlo workflow for simulating credit portfolio losses?
Factor-based Monte Carlo simulates systematic and idiosyncratic returns, marks defaults against thresholds, aggregates losses...
Can you break down a single caplet valuation step-by-step?
Work through caplet: d1 and d2, normal CDFs, then Black formula. Discount to payment date not fixing date.
What is the difference between operating and non-operating private foundations?
Non-operating foundations grant to others and face 5% payout; operating foundations run their own programs and don't face the 5% rule but must pass activity tests.
How do community foundations work and what's unique about their investment policy?
Community foundations pool donor funds under one public charity, offer pooled investment options, manage DAF liquidity, and avoid the 5% private foundation payout rule.
What is hierarchical clustering and how do I read a dendrogram?
Hierarchical clustering builds a nested tree of clusters; read the dendrogram by cutting at large vertical gaps to choose a natural K.
How do I optimize GST exemption allocation using a Dynasty Trust?
Dynasty Trusts compound wealth across generations shielded from estate/gift/GST taxes by allocating GST exemption at funding to create a zero inclusion ratio.
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