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.
2,013 documents
The document explains how different exchange hours can make daily returns across regions appear misaligned. News arriving after one market closes may be reflected in another market’s same-day return but only in the first market’s next session. Comparing…
The document asks whether single-period Markowitz mean-variance optimization is theoretically suitable for portfolios containing assets with different cash-flow and maturity structures. It highlights that bonds pay coupons, mature, and respond to…
The document interprets a formula for the weight of one asset in a two-asset portfolio optimized for risk-adjusted return. It examines how the allocation depends on both assets’ expected returns, their variances, and their covariance, with the question…
The document asks whether Merton’s result for the continuous-time limit of a single asset price process extends to multiple assets. Under specified assumptions, the referenced result characterizes the limiting process as an Itô process when rare events are…
The document asks how to apply a scenario in which the stock portion of a portfolio falls while the bond and commodity positions are left unchanged. It illustrates a direct repricing approach: apply the assumed percentage loss to the stock holding, retain…
The question asks whether daily returns across asset classes have measurable differences in time-series behavior, distributions, trader composition, and relationships with macroeconomic variables. It gives examples of possible contrasts, such as whether an…
The document asks how to generate monthly forecasts for interest rates, inflation, and unemployment while preserving their relationships in Monte Carlo simulations. It describes using a covariance matrix to represent the variables’ joint dependence, then…
The document surveys public and commercial sources for historical nominal yield curves across countries. It distinguishes fitted constant-maturity zero-coupon or par curves from generic benchmark bond yields, which usually track on-the-run securities and are…
The document asks where researchers can obtain inexpensive or free hedge fund and commodity trading advisor data. It mentions EDHEC and mutual fund data from Yahoo Finance as starting points, then reports several replies naming additional sources. These…
The document explains the meaning of state-contingent prices in a two-period asset-pricing setup. A security associated with a particular future state pays one unit if that state occurs and nothing in other states; its price today is the price of that…
The document asks which utility function is appropriate for evaluating multi-asset funds using historical return distributions across different levels of risk aversion. It compares constant relative risk aversion (CRRA) utility with quadratic utility and…
The document distinguishes risk parity from simply assigning equal asset volatilities. A portfolio’s total volatility is derived from its covariance matrix, and each asset’s risk contribution is its weight multiplied by its marginal contribution to portfolio…
The note derives the Black–Litterman risk-aversion coefficient from the market portfolio’s equilibrium weights and implied excess returns. Starting from the unconstrained mean–variance objective, its first-order solution gives implied returns as risk…
The document presents an interview prompt about constructing a risk-neutral trade based on the difference between the two-year-to-ten-year interest-rate spreads in Germany and the United States. It asks what “risk neutral” should mean in a trading interview,…
The document introduces the term quant and offers a broad definition: a quant applies mathematical modeling to financial markets, data, or complex instruments. It also lists a role taxonomy associated with Mark Joshi, including front-office,…
The discussion surveys alternatives to Bloomberg for traders and quantitative funds that need both historical prices and instrument reference data, such as futures multipliers, contract identifiers, and ETF costs. Suggested providers include Eikon, TickData,…
The note surveys ways to identify changes in correlation between asset return series and cautions against assuming that one historical window will always be suitable. Suggested diagnostics include formal changepoint analysis, shifts in covariance…
The document considers estimating a sequence of covariance matrices from asset returns while limiting each estimate to a fixed number of recent observations. The motivating example uses a 20-observation half-life and caps each window at 40 observations,…
This discussion outlines possible reasons a value-at-risk estimate may be too high or too low when evaluated against later portfolio outcomes. It emphasizes that VaR depends on the assumed distribution and method, and that in-sample market behavior may…
The document explains the market phrase “risk proxies” in the context of currencies and other asset classes. It uses the term for assets that tend to be treated as risky: emerging-market currencies are described as vulnerable during economic trouble, while…
The document discusses alternatives for rebuilding long-run historical asset return series after discontinuation of the Stocks, Bonds, Bills, and Inflation Yearbook. It identifies candidate sources for several categories: broad large-cap stocks, Fama–French…
The response outlines an R workflow for a research project with long daily histories from many countries and separate exchange-rate files. It recommends learning data frames and using tidyverse tools, especially dplyr and tidyr, to combine CSV data in…
The document addresses how to represent correlated Brownian shocks for a payoff depending on three underlying assets. The answer recommends applying a Cholesky decomposition to the assets’ covariance matrix. For a symmetric covariance matrix, the lower…
The document asks whether asset price boom, bust, and recovery cycles can be detected systematically. A response points to a study using an econometric model to predict bubbles and crises, suggesting that its framework may address boom and bust phases. The…