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 that PV01 and DV01 both describe value changes associated with a one basis point interest-rate move, but usage depends on the instrument and calculation. One response frames DV01 as the yield sensitivity of an individual bond, while…
The document examines how pull to par affects a bond's spot price and forward price when yields remain unchanged. The question relates the spot price, accrued interest, and financing to a fixed-date forward price, then asks how a long cheapest-to-deliver…
The document asks how asset managers track fixed income indexes whose holdings may number in the hundreds. It identifies characteristics that can guide a representative sample, including duration, credit quality, coupon, maturity, country, and bond type. It…
The note explains how to read a quoted sovereign five-year credit default swap spread and how it relates, in broad terms, to perceived credit risk. It interprets a quote of 42.520 as basis points and says that a lower spread generally signals a lower premium…
The document explains why investing cash through reverse repo cannot replace repo financing for a long bond, short futures position. In reverse repo, the investor lends cash and temporarily receives a bond as collateral; the bond is due back to the…
The document explains an instantaneous forward rate as the limiting forward rate over an interval whose length approaches zero. Starting from the no-arbitrage relationship between two zero-coupon bond prices and a simply compounded forward rate, it derives…
The document discusses a proposed characterization of weak stationarity for a continuous-time autoregressive process driven by Brownian noise. The stated conditions require the matrix governing the dynamics to have eigenvalues with negative real parts, and…
The question examines whether the ratio of two zero-coupon bond prices, with one price evaluated at a later date, equals the price of a bond maturing on that date when interest rates are stochastic. It challenges an argument that treats a later-date amount…
The document distinguishes a caplet written on a forward Libor rate from one whose payoff uses the spot Libor rate observed at the option’s reset date. The forward-rate caplet can be expressed under the relevant forward measure as an option on a martingale…
The document considers simulating defaults in a pool of mortgage loans whose principal declines through scheduled payments and nonrandom prepayments. The author proposes modeling the conditional default rate with a nonnegative, mean-reverting square-root…
The example explains why a QuantLib price for a fixed-rate bond can differ from a hand calculation. It first checks the generated cash flows and finds that the semiannual coupon schedule is as intended. The initial zero curve, however, interpolates from a…
The discussion considers an open term loan that pays monthly interest and returns principal when closed. Because either the lender or borrower can end the loan, its remaining cash flows depend on interest rates and on each party’s decision to call or repay.…
The discussion compares ways to set floating cash flows for interest rate swaps after LIBOR, whose fixing was known at the start of an accrual period. It distinguishes forward-looking term rates from backward-looking overnight risk-free rates compounded over…
The document describes two ways to translate a government bond futures position into cash-bond exposure. A simple approach identifies the current cheapest-to-deliver bond and scales its value and risks by the inverse of that bond’s conversion factor. This…
The note distinguishes the Federal Funds rate from the Overnight Index Swap rate when analyzing USD interest rate swaps. The Federal Funds rate is an overnight rate, while an OIS rate represents the fixed leg of a swap against compounded daily Federal Funds…
The document addresses how to calculate average monthly percent excess returns for portfolios formed while replicating the Fama–French five-factor model. Its suggested workflow is to obtain historical portfolio prices or returns and a Treasury bill rate or…
The document examines why a convertible bond model might show a higher fair value when the issuer’s CDS spread rises, even though wider spreads imply greater default risk. One explanation uses a delta hedged position: a convertible bond paired with a short…
The document gives Bloomberg-based routes for locating swap rates and historical swap data, with GBP as its example. It recommends using the Curve Finder to filter for GBP, entering a tenor-specific swap query such as a five-year GBP swap and following the…
The document asks why some Treasury bills can yield less than the Federal Reserve’s overnight reverse repo rate, despite the apparent safety of placing cash directly with the Fed. Its explanation is market segmentation: investors differ in which markets and…
The document explains how to estimate tenor-specific DV01, or key-rate risk, for a swap in QuantLib. Instead of shifting the entire yield curve to obtain aggregate sensitivity, it reprices the swap after increasing each market par-rate quote individually,…
A Treasury–OIS spread compares a Treasury bond yield with the fixed rate on an overnight index swap of a similar tenor. The explanation treats OIS as a proxy for repo funding costs, so the spread can help assess whether Treasuries look rich or cheap relative…
The document addresses a common CAPM input question: whether the S&P 500 or a Treasury yield should serve as the risk-free rate. Its answer distinguishes the market portfolio, often represented by a broad equity index, from the risk-free asset used in the…
The document asks how to derive the two risk-free rates used in VIX calculations from a table of Treasury yields when the near-term and next-term SPX option series expire on different days. It describes linear interpolation between the 30-day and 60-day…
The document asks how default affects the nondefaulting party in a plain interest rate swap. Party A pays floating and receives fixed from B; if A defaults, the question is why B’s position appears to benefit when rates rise but not when rates fall. It…