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When do you need a particle filter instead of a Kalman filter?
Particle filters (sequential Monte Carlo) approximate the posterior distribution of hidden states by a cloud of weighted samples. Each particle represents one possible state trajectory...
How do I incorporate long-term care insurance into a retirement plan?
LTC analysis: quantify risk, assess self-insurance viability, compare traditional vs hybrid vs annuity-linked policies...
How do I set up a key rate duration hedge for a bond portfolio?
Decompose portfolio duration into 2/5/10/20/30Y KRDs. Compute DV01 at each point and short matching Treasury futures contracts.
Why is the support (companion) tranche the riskiest part of a CMO, and who would buy it?
The support tranche absorbs all prepayment variability in a CMO, with average life swinging from under 2 years to over 24 years. It offers the highest yield (100-300+ bps above PAC tranches) and is purchased by hedge funds and sophisticated traders who can actively manage the prepayment risk.
What is an 'asset play' investment strategy and how do you identify hidden asset value?
An asset play targets companies whose market capitalization understates the realizable value of underlying assets — including real estate at historical cost, overlooked subsidiaries, NOL carryforwards, and LIFO reserves. Analysts compare adjusted NAV to market cap and identify potential catalysts.
What are embedded derivatives and when do they need to be separated from the host contract?
An embedded derivative modifies the cash flows of a host contract in a derivative-like way. Bifurcation is required when the embedded derivative is not closely related to the host, would qualify as a standalone derivative, and the hybrid is not already at fair value through P&L. Under IFRS 9, financial assets no longer require bifurcation but are instead classified entirely based on the SPPI test.
How do you calculate basic EPS versus diluted EPS?
Basic EPS equals net income minus preferred dividends divided by weighted average shares outstanding. Diluted EPS adjusts for potentially dilutive securities: stock options use the treasury stock method (adding only incremental shares), while convertible bonds and convertible preferred use the if-converted method (adjusting both numerator and denominator).
How is the remeasurement gain or loss calculated under the temporal method, and where does it go?
Under the temporal method, the remeasurement gain or loss is the balancing figure that arises from translating monetary and non-monetary items at different exchange rates. It is recognized in the income statement, not OCI.
How is a sale-and-leaseback transaction accounted for, and when is the 'sale' not really a sale?
In a sale-and-leaseback, if the transfer qualifies as a sale, the seller-lessee recognizes only the portion of the gain attributable to the rights actually transferred to the buyer. If the transfer fails the sale criteria, the entire transaction is treated as a financing arrangement.
How does IFRS handle financial reporting for subsidiaries in hyperinflationary economies?
Under IAS 29, financial statements of subsidiaries in hyperinflationary economies are first restated to current purchasing power using a general price index, then translated to the parent's currency at the current exchange rate. Monetary gains or losses from holding net monetary items during inflation are recognized in the income statement.
How do straight-line and double-declining-balance depreciation affect financial statements differently?
Straight-line and double-declining-balance depreciation produce the same total expense over an asset's life but allocate it differently. DDB front-loads expense, resulting in lower income and assets in early years, with a crossover point occurring around mid-life.
How does herding behavior manifest among institutional investors and what are the market consequences?
Herding among institutional investors is more nuanced than simply 'following the crowd.' Professional fund managers herd for several rational and behavioral reasons, and the effects on markets can be significant.
What is GIPS and why should I care about it for CFA Level I?
GIPS is a voluntary global standard for presenting investment performance. Key principles: firm-wide compliance, inclusion of all portfolios in composites, time-weighted returns, and prohibition of cherry-picking results.
How do I use the Gordon Growth Model to value a stock? It seems too simple to actually work.
The Gordon Growth Model values a stock as V₀ = D₁/(r-g). While seemingly simple, it works well for mature companies with stable dividend growth but breaks down when growth approaches the required return or for non-dividend payers.
How do different accounting method choices affect ratio comparisons between companies?
Analysts adjust for different accounting methods by converting LIFO to FIFO using the LIFO reserve, capitalizing operating leases, and restating other differences to a common basis. The adjustments change inventory turnover, margins, leverage, and return ratios.
How do I calculate diluted EPS using the treasury stock method and if-converted method?
Diluted EPS uses the treasury stock method for options/warrants (assuming exercise and share repurchase) and the if-converted method for convertible bonds/preferred stock. Always test for anti-dilution by comparing per-share impact to basic EPS.
What are soft dollars and when are they acceptable under CFA Institute standards?
Soft dollars are the practice of using client brokerage commissions to pay for research services beyond execution. CFA Institute permits soft dollars for research that benefits clients, but prohibits their use for administrative overhead, marketing, or personal expenses.
How does a recurrent neural network differ from a feedforward network?
RNN carries hidden state across time steps with shared weights. Suits sequences but vanilla RNNs suffer vanishing gradients.
How is a bargain purchase gain recognized and what causes it?
A bargain purchase arises when fair value of identifiable net assets exceeds total consideration. Before recognizing the gain in earnings, the acquirer must reassess identification and measurement. Common causes include distressed sales and forced divestitures...
How does DCC model dynamic conditional correlations efficiently?
DCC decomposes conditional covariance into time-varying volatilities and correlations, estimated in two stages with just two parameters governing correlation dynamics.
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