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.
5,922 documents
The document discusses choosing hedges for a vanilla bond portfolio, including bond futures. It suggests that matching a portfolio’s DV01 and maturity to a futures contract is a basic starting point, then points to key rate durations as a way to measure…
The document asks how a dealer might hedge a large single-stock position acquired in a client block trade. The dealer is described as seeking to reduce the risk carried on its balance sheet, potentially by shorting other spot equities. The author wonders…
The document frames a monthly subscription that lets a customer select a limited number of products from a larger catalog as an option-like payoff. It assumes each product has a subscription price that acts like a strike and an outside-market price that acts…
The discussion explains how a forecasting model can have negative out-of-sample R² while still supporting profitable long-short positions. If the forecast ranks assets well but misestimates the overall return level, the squared-error measure can be poor even…
The document considers how to distinguish a manager’s deliberate stock selections from positions that simply differ from a benchmark. That distinction is difficult when the benchmark is unknown or poorly matched to the fund’s style, and when a fund holds…
The document describes a mean-variance allocation problem that minimizes portfolio variance under a full-investment constraint, weight bounds, and an optional target-return constraint. It also mentions a covariance shrinkage result for minimum global…
The document asks whether standard deviation remains useful when returns have heavier tails than a normal distribution and surveys alternatives. Standard deviation can serve as a first approximation when risk means deviation from expected return and variance…
This note outlines a framework for attributing daily P&L in portfolios holding bonds, FX forwards, and deposits. For interest-rate moves, it pairs rate sensitivities such as PV01 with changes in curve rates, distributed across chosen tenor buckets.…
The question asks how to select stock indicators that update daily when portfolio optimization uses adjusted daily closing prices. It contrasts price-based measures, which can change each trading day, with accounting ratios that generally update when…
The document collects suggestions for studying stochastic control and optimization in finance, including the Merton portfolio problem and related topics. Contributors point to work on optimal wealth allocation and decumulation, as well as books covering…
The discussion connects constant rebalanced portfolios (CRPs) and volatility pumping to the path dependence studied in leveraged exchange-traded funds. The accepted answer proposes studying leveraged fund models, then considering a de-leveraged version to…
The discussion explains why two risky assets typically produce a curved efficient frontier in mean and risk space, while adding a risk-free asset can produce a straight capital allocation line. With a positive definite covariance matrix, the relationship…
The document frames a benchmark construction problem for a basket of coupon bonds denominated in the same currency but differing in maturity, face value, coupon, and outstanding amount. It asks how to summarize the basket with an index yield, and considers a…
The document discusses calculating covariance for portfolios with an arbitrary number of assets. It describes forming a covariance matrix from a matrix of asset returns, which provides a general representation beyond formulas for pairs or small groups of…
The document considers how to separate returns from general asset allocation, security selection, and tactical allocation when portfolio holdings and weights change over time. The investor proposes maintaining a replica portfolio that mirrors trades in the…
The document explains why knowing each of two strategies’ correlations with a benchmark does not by itself determine the correlation of their combined portfolio. It derives the portfolio’s covariance with the benchmark as the weighted sum of each strategy’s…
The document asks how to choose software or packages for minimizing a portfolio’s tracking error while adding corporate social responsibility constraints to an S&P 500 portfolio. The proposed study compares five specifications of expected tracking error:…
The document explains why maximizing a company’s stock value can be a more informative objective than maximizing reported or expected profits when future outcomes are uncertain. Profit depends on the period being measured and can be affected by accounting…
The document compares three ways to estimate average correlation among stocks in a portfolio or index. The first computes pairwise correlations and weights them by constituent weights, excluding self-correlations. The other two infer correlation from…
Ex-ante tracking error is the standard deviation of the portfolio’s return minus the benchmark’s return. It can be computed from the excess-weight vector and a covariance matrix covering the full return universe. Securities absent from the benchmark remain…
The document examines how to interpret clearing-house interest rate swap and overnight indexed swap quotes when bootstrapping discount and forward curves. The response says the three-month LIBOR swap rates from CME and LCH appear broadly comparable, with CME…
The document asks whether a mean-variance optimization can produce a portfolio with higher variance and lower return as the risk-appetite parameter changes. It also asks whether increasing the parameter could correspond to an inverse relationship between…
The document asks about a condition in a mathematical definition of a constrained market: sufficiently small nonzero cash-flow positions can be scaled up to a specified size while remaining feasible. The answer says this condition is included mainly to make…
The document compares ways to obtain international company fundamentals for a stock screening database. The requested data includes financial statements and basic market quotes across multiple countries, with no need for real-time updates. It presents two…