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 explains why a swap break clause matters and how counterparties may handle an approaching termination date. A contractual break can limit the period used in potential future exposure calculations: where a break allows termination within a…
The document compares monthly loan installments paid at the beginning versus the end of each month. Its example uses a fixed principal, annual interest rate, and repayment term, and reports a lower installment for the beginning-of-month schedule. The…
This question asks whether swap rate quantiles in the one-factor Hull-White interest-rate model have a convenient closed-form approximation. The model gives a Gaussian short rate and explicit mean and covariance from calibration inputs. Bond prices are…
The discussion explains why a portfolio valued through a theoretical replicating model may carry more risk than its model-based VaR suggests. Convertible bonds illustrate the issue: their theoretical values depend on factors such as volatility, interest…
The document discusses pricing a zero-coupon bond under the Cox-Ingersoll-Ross short-rate model and asks how to choose its long-run rate, mean-reversion speed, and volatility. One response expresses bond value as the expected discount factor over the bond’s…
The document explains why mortgage prepayment forecasting can be difficult when a model uses borrower traits and current conditions alone. Borrowers’ refinancing choices depend on the path of interest rates: the same current mortgage rate can imply different…
The document explains how to adapt a collateralized forward-pricing relationship for an inflation-linked bond with a coupon paid before forward settlement. The nominal bond proceeds method is adjusted by applying an index ratio to the spot value, interim…
The answer introduces the relationship between a chosen numeraire and the probability measure used for pricing. Its central idea is that, under the measure associated with a numeraire, the price of another asset divided by that numeraire has no expected…
The note values a five-year monthly annuity whose payment increases by two units each month, starting with a payment of two at the first month-end. It expresses the present value as the sum of each payment discounted over its payment period, using an…
The note concerns using CME SOFR futures for hedging and asks why a market-data field reports a duration of 0.25 across maturities. The response associates that quarter-year figure with three-month SOFR futures, whose underlying reference period spans about…
The discussion asks which day-count convention applies to U.S. Treasury bills, notes, and bonds, and who sets the rules. It contrasts a general claim that bills use Actual/360 and Treasury bonds use Actual/365 with an answer pointing to the Treasury’s…
This note explains why a one-year cash flow discounted with QuantLib’s FlatForward curve may not produce the value expected from a nominal annual rate. The key is the curve’s default compounding convention: the rate is treated as continuously compounded, so…
The document describes a pricing problem involving a derivative exposed to both a near risk-free short rate and a credit-risky short rate. The proposed setup models the rates with correlated Vasicek processes. For the near risk-free rate, the author can…
The document diagnoses unexpected zero rates from a QuantLib yield curve. Its main finding is a units error: rates supplied to the curve are decimal values, so entering values such as 0.43902 represents 43.902%, not 0.43902%. Converting percentage-style…
The note asks how stripped Treasury securities affect the composition and valuation of a short-term Treasury ETF. It quotes index eligibility rules for the fund: eligible securities are publicly issued U.S. Treasury obligations with fixed coupons, a…
The document explains why bond-market discussions use more than one definition of carry. A short-horizon return approximation separates coupon income, pull to par, and the price effect of a yield change. In financed-position analysis, carry is also quoted as…
The document asks what an adjustment for short-run liquidity means in a statement that relates the risk-free rate of return to the economy’s expected long-run growth rate. It identifies a conceptual question about how near-term liquidity conditions should…
The document asks how to apply the PRIIPs category 3 methodology to an index-linked bond product. The proposed workflow is to collect daily historical yield-curve log returns, use principal component analysis to retain the three largest components,…
The document clarifies why a one-day Treasury repo can settle on the same day even though Treasury trades are commonly described as settling T+1. The key distinction is the settlement mechanism: Fedwire Securities Service supports real-time gross…
The document asks whether an investor should choose an AAA government bond or a company’s shares when both are predicted with certainty to return the same amount over a year. The accepted response favors the bond because other market participants perceive it…
This exchange explains why the fixed leg of an interest-rate swap often shows most of the reported DV01 while the floating leg appears less sensitive. Under a convention that treats the legs as including offsetting principal exchanges at maturity, the fixed…
The discussion explains why some callable bonds switch from a fixed coupon to a floating coupon with a very large spread if the issuer does not call them. The step-up is intended to make continued borrowing costly: even if benchmark rates fall, the issuer…
The document addresses why a collateral valuation adjustment can become more negative when a counterparty posts more collateral. The displayed expression weights expected collateral by a reinvestment spread and discounts the result, while the questioner's…
The document explains two ways to construct a constant-maturity sovereign bond yield series. A rolling series records the yield of whichever specific bond is currently designated on-the-run for a maturity. When the benchmark bond changes, the series can jump…