Constructing commodity spreads, calendar legs, and option straps

Name the differential the book keeps

A commodity-spread is assembled as one long futures position paired with one short position in a related contract. The exposure is the price difference between the legs rather than each contract taken alone.

Editorial interpretation: TradersWeek treats that pairing as a residual-risk specification. Name the differential you intend to keep, size the legs so leftover quantity or dollar exposure is not accidental, then choose whether commodity-spread trading, calendar-spread trading, or a commodity-option-strap is the vehicle that makes entry, exit, and abstention one testable procedure.

Choose a construction family

Spread construction families include same-commodity different-delivery pairings, the same commodity on different exchanges, related but distinct commodities, and a raw commodity versus its processed products, including a soybean versus oil-and-meal crush and its reverse.

Those families are an interdelivery-spread, an intermarket-spread, an intercommodity-spread, and a product-spread. An interdelivery-spread is the calendar form of a commodity-spread.

Size leftover quantity or dollar value

When the two legs have unequal contract sizes, the spread can be written as a unit-matched balanced-spread or as a money-spread in total dollar value. One stated unit-matched example is four October hog contracts against three October cattle contracts, each side representing 120,000 pounds of meat.

Enter the quoted differential

Because distant-month legs are typically less liquid than nearby legs, the order-construction procedure is to obtain a direct floor quotation of the spread and enter a limit at that quoted differential.

Historical house practice described spread initial margin as about one-fourth to one-fifth of outright net margin, while spread commissions were at least 20 percent higher than outright commissions.

Set calendar legs from relative sensitivity

For grains, tropicals, industrial metals, financial instruments, plywood, and pork bellies, nearby contracts were treated as more price-sensitive than deferred contracts. A bullish calendar construction bought the nearby and sold the deferred, which is a forward-spread. A bearish construction reversed those legs, which is a backward-spread.

Precious metals and potatoes used the opposite pairing. Perishable non-storable markets were treated as having unpredictable relative sensitivity and required chart confirmation before a spread was placed.

A change in the yield-curve slope from negative to positive was treated as a reliable condition for placing a forward calendar spread in interest-rate futures.

A forward calendar spread placed in a carrying-charge market was described as having downside limited to the negative full carrying charge and upside not capped. That carrying-charge term structure is contango, and a forward calendar placed while the market is in contango is a tango. A butterfly combined one forward-spread and one backward-spread and was described as nearly free of risk with limited profit potential.

A strap as a bullish overlay

A commodity-option-spread pairs a long option with a short option of the same type. That pairing is distinct from a commodity-option-straddle of a put plus a call.

A commodity-option-strap is two calls plus one put on the same future and was used as a bullish overlay. Adding more legs was described as reducing both residual risk and residual profit potential.

Limit each combination inside the book

Portfolio construction assigned each new combination a risk-reward ratio, profit objective, and stop. No single position was allowed to risk more than 5 percent of equity or to use original margin above 10 percent of equity. Aggregate risk was capped at 25 percent.

A linear-program mix kept about 20 percent of equity in outright nets, 30 percent in higher-risk spreads, 30 percent in carrying-charge and other low-risk multi-leg spreads, and 20 percent in cash. A spread was to be closed as a unit, though one leg could be shifted to another month when delivery approached.