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.
1,414 documents
The document raises whether Geometric Brownian Motion is suitable for forecasting timber prices over a long horizon. The proposed example is quarterly sawtimber stumpage prices projected ten or fifteen years ahead. The author reports that an Augmented…
The document describes estimating coefficients for a deterministic seasonal function from observations using SciPy’s nonlinear least-squares optimizer. The model includes a constant, a linear time term, and sine and cosine components at two frequencies. The…
The note discusses how to construct a provisional volatility surface when options on the target market trade rarely. It outlines three approaches: use implied volatilities from a related underlying as a proxy, estimate historical statistical volatility, or…
The discussion reviews a paper claiming that changes in futures open interest predict returns in related asset classes, including commodities, Treasuries, and equities. One response reports that an advisory analysis found predictive evidence after…
The document explains why an ICE electricity futures settlement can change even when a contract records no volume or open interest. Under the described procedure, the exchange first selects an anchor expiry, identified for the products discussed as the…
The document asks whether a single-commodity exchange-traded commodity product can accurately be described as a delta-one investment when it holds futures contracts. As a contract approaches expiry, the product must roll its exposure into a later contract.…
The document explains why the market price of risk for oil cannot be inferred simply from oil’s expected return and volatility as though it were a purely financial investment. The discussion distinguishes investment assets, valued for their financial cash…
The discussion considers how to test a next-day wheat futures direction model with limited capital after encouraging backtests. One suggestion is to use a broker’s demo account to observe how the strategy behaves in live market conditions before committing…
The discussion considers what additional time series might help a neural network forecast daily foreign exchange rates. Suggested inputs include currency crosses, interest rate differentials, yield curve slopes, and changes in rates, along with country-level…
The response discusses how to build implied-volatility smiles and surfaces for equity options and options on commodity futures. It names SVI as a frequently used fitting approach and mentions mixed-lognormal models, while emphasizing that surface…
The document addresses whether a minimum variance hedge ratio requires spot and futures prices to use the same physical units. Its example compares spot prices quoted in dollars per barrel with futures prices quoted in dollars per million British thermal…
The note discusses how to set the time unit when estimating geometric Brownian motion drift and volatility from daily prices. It defines returns as successive log price changes and scales their sample standard deviation by the square root of the time step.…
The document explains how to estimate historical VaR for an option by replaying past market changes against today’s position. Instead of sorting historical returns of options that had different expiries and moneyness, it applies historical changes in risk…
The document asks whether futures on the same bond or equity index have different risk profiles when they mature on different dates. The answer says maturity effects depend on the underlying and the length of the available futures curve. For equity index and…
The document discusses why futures prices can respond to supply and demand in the futures market rather than being mechanically fixed by spot prices. In contango, an investor may buy physical oil at a low spot price, store it, and sell futures for later…
The discussion addresses whether shorting a futures contract earns a return simply because its price converges toward spot as expiration approaches. It explains that the futures price difference reflects carrying costs and financing, rather than a separate…
The document asks how exchanges determine daily settlement prices for illiquid futures contracts when no trades occur, since positions still need to be marked to market. It seeks information about practices actually used and how common they are, rather than…
The document discusses estimating value at risk for a commodity forward exposed to commodity price, foreign exchange, interest rate, and commodity spread movements. It explains that full revaluation can be practical when the forward pricing formula is…
The document explores why a futures contract is quoted at one market price even though a long and a short position gain or lose value in opposite directions. It describes a commodity contract with a fixed delivery amount, price, and expiration, then…
The document surveys risk measures used to monitor equity, fixed-income, commodity, and foreign-exchange portfolios. It lists position sizes and exposures alongside measures such as volatility, beta, duration, DV01, credit categories, currency risk, and…
The document asks how to estimate short-dated implied volatility for options on commodity futures when listed expiries are sparse. Its soybean example contrasts contracts with clearly observable weekly or short-dated option expiries against intermediate…
The document explains why a futures hedge can leave meaningful risk even when the contract was intended to lock in a price. A hedger may retain an asset, such as a bond or stock basket, and take an offsetting position in a correlated futures contract rather…
The discussion addresses an uneven set of out-of-the-money calls and puts when estimating a VIX-style implied variance measure from commodity options. It highlights that limited strike coverage can bias the estimate downward, while widely spaced strikes can…
The document outlines how commodity trading firms manage flat price exposure arising from physical contracts. A back-to-back physical contract with matching commodity, timing, and delivery location can offset commodity price risk, leaving mainly counterparty…