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How do I test for a structural break using the Chow test?
The Chow test evaluates whether a regression's coefficients are stable across two known subsamples. Rejecting the null means the structural relationship changed.
How do you test groups of long-lived assets for impairment?
Group assets at lowest level with independent cash flows. Test recoverability using undiscounted flows, then measure against fair value.
How do companies game days payable outstanding to boost cash flow?
DPO extension helps CFO once. Gaming shows as 30+ day jumps, supply chain finance hiding debt, and CFO growth entirely from payables stretch.
What are the main algorithmic trading strategies (TWAP, VWAP, POV, IS) and when do you use each?
Algorithmic trading strategies automate order execution to minimize trading costs. Each algorithm has a different objective function, making it suited to specific scenarios.
What does ultima measure in higher-order option analysis?
Ultima is the third derivative of option price with respect to volatility, capturing how volga accelerates as vol moves.
How do I detect channel stuffing through inventory analysis?
Channel stuffing shifts inventory from the manufacturer's balance sheet to the distributor's shelves through aggressive end-of-quarter sales.
What is BEPS and how does it affect multinational tax analysis?
BEPS is OECD's framework to prevent profit shifting to low-tax jurisdictions. BEPS 2.0 added Pillar One (taxing rights reallocation) and Pillar Two (15% global minimum). For Hyperion, expect 3-5pp ETR uplift...
How does a year-on-year inflation swap work?
A year-on-year inflation swap pays annual realized CPI against a fixed breakeven, each period settling independently.
What is cash-flow matching (dedication) and when is it preferred over duration matching?
Cash-flow matching schedules bond maturities to exactly pay liabilities, eliminating rebalancing and reinvestment risk. Costlier and less flexible than duration matching but offers certainty.
When do I use amortized cost versus FVOCI for debt investments?
Amortized cost requires hold-to-collect plus SPPI. FVOCI requires hold-to-collect-and-sell plus SPPI. Everything else is FVPL.
How does continuous-time delta hedging work and why does it break down in practice?
Continuous delta hedging replicates an option by holding Delta shares of the underlying at every instant. Theoretically, the hedged portfolio earns the risk-free rate with zero variance...
What is the forward rate bias and how does the carry trade exploit it?
Forward rate bias means forwards over-predict high-yield currency depreciation. Carry trade borrows low-yield, invests high-yield, captures the differential.
What must a business combinations footnote disclose?
ASC 805 disclosures: consideration breakdown, assets/liabilities recognized, goodwill rationale, pro forma results. Orion Networks' $1.8B PacketForge footnote shown.
What is intraperiod tax allocation and why does it matter for EPS analysis?
Intraperiod allocation splits total tax expense across continuing ops, discontinued ops, OCI, and equity — preserving a clean ETR for the recurring business.
What does the Ramsey RESET test tell me about model misspecification?
The Ramsey RESET test detects omitted variables and incorrect functional forms by checking whether powers of the fitted values add explanatory power.
What triggers impairment testing for finite-lived intangibles?
Finite-lived intangibles tested only when impairment indicators exist. Two-step: undiscounted cash flow recoverability, then fair value measurement.
What are the red flags when inventory grows faster than revenue?
Inventory up 34% vs revenue 6% is a canary signal. Check DIO, composition mix (finished goods is worst), obsolescence reserves, and gross margin.
How do companies manipulate the cash flow statement and how can analysts detect it?
Companies manipulate cash flows primarily through classification and timing tricks: stretching payables, factoring receivables to accelerate collections, capitalizing operating expenditures to shift outflows to investing activities, and managing working capital around reporting dates. Analysts detect these by tracking CFO-to-net-income ratios, analyzing free cash flow, and decomposing working capital changes.
What is zomma and how does it connect gamma and volatility?
Zomma is the derivative of gamma with respect to volatility, describing how the gamma profile reshapes when implied vol shifts.
What is a grantor trust and how is it taxed differently from a non-grantor trust?
Grantor trusts are transparent for income tax — the grantor pays tax on trust income, effectively making additional tax-free gifts to beneficiaries.
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