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 discusses ways to obtain the Bank of England base rate for a Java program without requiring manual user entry. Suggestions include reading the current rate from the Bank’s homepage, importing historical and current rate tables from its…
The document asks whether the fraction of simulated asset-liability management paths ending in bankruptcy can be read as the real-world probability of bankruptcy. Its answer cautions that a simulation percentage is not an exact probability estimate simply…
The document asks how to compare the distributions of swaption market observations, such as volatility or liquidity spreads, across two time periods. It considers whether all USD swaption observations should be treated as two samples or whether observations…
The document examines how banks might manage funding risk in variable-rate loans as LIBOR gives way to risk-free rates such as SOFR. Under LIBOR-linked lending, a bank could pass through some changes in unsecured interbank funding costs by charging a fixed…
The document asks how to represent overnight, tomorrow-next, and spot-next foreign-exchange rate quotes when building an overnight-indexed curve in QuantLib. The proposed setup creates separate overnight indices with different settlement-day counts and…
This question examines why modified duration from a QuantLib bond setup differs from Excel’s MDURATION for the same stated bond inputs. The supplied Python example constructs a bond with a one-year coupon period, an Actual/Actual day count, and semiannual…
The document asks whether no-arbitrage conditions are known for Bachelier, or normal, implied volatility surfaces. Normal volatility is defined through the parameter that reproduces an option price under the Bachelier formula. The author contrasts this with…
The document addresses short-end SOFR curve construction when daily forward-rate jumps are desired at FOMC dates but available three-month futures do not provide enough independent instruments to identify every node. This creates an underspecified…
The document examines a foreign-exchange spot quoted as dollars per euro and compares expectations under dollar and euro risk-neutral measures. The question derives discounted-price expectation identities using each currency's bank-account numeraire, then…
The document explains why standard Black-style approximations for cash-settled swaptions imply payer-receiver parity around the forward swap rate. Under that approximation, a zero-wide collar—the difference between payer and receiver swaptions at the same…
The document distinguishes the risk that a borrower or issuer will fail to repay from the risk that a trading counterparty will fail to meet its contractual obligations. A bondholder, for example, faces the issuer’s credit risk; a buyer of credit protection…
The note clarifies that Diebold–Li is a way to estimate a Nelson–Siegel yield curve, rather than a separate curve model with its own distinct estimation procedure. The key modeling choice is to fix the Nelson–Siegel shape parameter; with that parameter held…
The document explains how to interpret a country's sovereign credit ratings over time. Ratings describe a government's creditworthiness when an agency publishes them; they are not continuous measurements of past or future conditions. Agencies may issue…
The document evaluates a simple nearest-match method for assigning European government bond benchmarks. It compares each bond with government issues using coupon, maturity date, issue date, and volume, scaled so each field has equal weight, then selects the…
The document asks why a cointegrating vector from a Johansen test differs from coefficients estimated by ordinary least squares in a model of firm revenues and several explanatory variables. The reported test statistics are interpreted as indicating one…
The document asks whether Bloomberg Barclays monthly total and excess returns can be reproduced from constituent-level index data, including constituent returns, market values, and excess returns. The author reports a close but imperfect tie-out for a broad…
The document considers how to separate a shared global component of bond yields from local influences. It suggests applying principal component analysis to yields at several curve maturities, from shorter tenors to the long end, as a way to identify common…
The document explains roll-rate analysis as tracking accounts from one delinquency state to another over a fixed interval, then questions whether published portfolio projections follow from the reported transition percentages. It sets up equations to infer…
The document describes an attempt to infer a coherent zero-coupon discount curve from a quoted forward swap curve, with the aim of also producing a three-month LIBOR forward curve. The author recognizes that the available observations may not uniquely…
The document discusses how a dealer might quote caps and floors in an emerging market with swaps but no traded interest-rate options. Without option quotes for calibration, the response recommends developing an indicative volatility cube using comparable…
The document asks how to construct term structures for ESTER and SOFR, daily reference rates that do not necessarily have established swap markets. It contrasts the usual curve-building approach with the limited instruments available for these newer…
The document raises a practical calibration question for a one-factor Hull–White interest-rate model used to price a structured note. The example note pays annual coupons based on the positive part of three-month EUR Libor plus a spread, then returns…
The document distinguishes two sources of bond price change. Pull-to-par is the movement of a bond’s clean price toward face value as maturity approaches, assuming its yield is unchanged. For a zero-coupon bond, the price converges to par as the remaining…
The document clarifies terminology in fixed-income return attribution. It considers whether implied forward rates and the market-implied return from forward rates refer to the same expected-return benchmark, and whether realized return can be split into…