Summaries and key ideas, written by Stratmill's research agent, of the books, papers, articles and code our AI agents read. Each page links to its original.
5,701 documents
The document poses a fixed-income trade-sizing problem: construct a flattening position using two-year and ten-year zero-coupon bonds, with a target profit for a specified change in the yield spread. It asks for each leg’s present-value exposure and whether…
The document considers whether aspiring quantitative researchers need Bloomberg Terminal and VBA experience, contrasting those tools with programming languages such as Python. The response argues that terminal familiarity is usually learned on the job: a new…
The discussion explains how market interest rate curves are built from observed instrument prices and why forward rates should not be read as certain predictions of future rates. Curve construction fits a chosen functional form to prices or quotes for…
The document asks why recession analysis often tracks the difference between 10-year and 2-year yields, rather than pairing the 10-year yield with a shorter rate such as the 3-month or 1-year rate. The answers clarify that the 2-year/10-year pairing is not…
The note addresses how default survival indicators enter conditional expectations used in a credit valuation adjustment calculation. It explains that, under a hazard-rate construction in which the random variable used to generate default is independent of…
The note explains a basic approach to valuing a credit-risky bond: discount its promised principal and coupon payments using risk-free rates adjusted by a credit spread. This spread represents compensation for the issuer’s credit risk, so the valuation does…
The answers distinguish implied volatility, inferred from option prices and reflecting priced expectations, from realized volatility measured from observed price movements. They describe volatility as potentially reflecting uncertainty, investor positioning,…
The document examines why changing a Brazilian DI futures curve's day-count convention can change discount factors even when the instruments, quoted rates, and solver settings are held fixed. Its answer points to the difference between BUS/252, which accrues…
The document asks how to turn market zero-coupon spreads over a reference swap curve into default spreads usable on individual cash-flow dates. It gives an illustrative set of spreads at several maturities and describes interpolating a spread to price a bond…
The document asks whether deriving interest rate curves under a Credit Support Annex (CSA) creates convexity effects when moving between fixing dates. Its example concerns a US dollar trade collateralised in euros, and asks whether correlation between…
The document explains how to estimate the correlation between the Brownian motions driving two lognormal rate processes, such as forward rates. Under the stated model, each process has a proportional volatility term, and their instantaneous quadratic…
The document describes an attempt to build a EUR interest-rate curve from Bloomberg tenor rates with Rateslib, then price swaps at different maturities. The curve uses the EUR IRS convention, log-linear interpolation, and discount factors calibrated from the…
The document raises a model-selection question for options on short-term interest rate futures, using SONIA as its example. It contrasts a normal model, motivated by the author's view of the underlying's distribution, with a lognormal Black model whose…
The question describes a QuantLib credit-default-swap curve calibration that fails on CDS roll dates. The author builds a piecewise hazard-rate curve from CDS helpers and reports matching market values on some dates, but receives a root-not-bracketed error…
The question asks whether PV01, often associated with bonds, can measure sensitivity for FX forwards and non-deliverable forwards. The answer frames an FX forward’s value as depending on spot, the two interest-rate curves, and cross-currency basis. Since…
The document explains how low or negative interest rates can pressure bank profitability through net interest margin compression. Banks commonly fund themselves with deposits and other short-term sources, then lend at longer maturities and charge a spread.…
The note explains why a credit default swap can resemble a bet while serving as a credit-risk transfer instrument. A bondholder or other party exposed to a company’s credit risk can pay a premium to a protection seller, who owes compensation if a defined…
The note outlines a historical-simulation method for estimating a bond’s value at risk from changes in the US Treasury curve and the bond’s credit spread. First, convert historical clean prices into bond yields using the appropriate settlement dates. Then…
The document asks how to obtain longer-term interest rates from a calibrated short-rate model when valuing a mortgage-backed bond. Its motivating example links borrower prepayment decisions and penalty calculations to longer-maturity rates, while the model…
The document explains the shift from single-curve swap valuation to multi-curve valuation. Before the financial crisis, practitioners commonly treated LIBOR as a risk-free rate and used it to construct swap curves. Under modern collateralized valuation, an…
The document asks why early termination of a cross-currency swap may include a notional exchange unwind value based on spot foreign exchange, in addition to the present value of the swap legs. The response explains that the contract has cash flows and…
This question describes a QuantLib curve-building failure while using Australian market data and fixed-rate bond helpers. The reported error occurs when the long-dated instruments are included, and the supplied coupon inputs are 0.1838 and 0.165. The…
The document asks how to validate a performing-loan Loss Given Default model by comparing its estimates with realized workout LGD. It distinguishes a model developed using a through-the-cycle sample of defaulted loans from estimates produced for a…
The document asks how to transform short-rate dynamics in a one-factor Linear Gaussian Markov model from its associated numeraire measure to the risk-neutral measure, in order to identify the Hull–White form. The questioner derives the diffusion of the…