Name the spread, then construct the legs

Map the word before the order

The word spread is applied to three different objects: a bid-ask quote difference, a multi-leg option position, and a paired futures position. Editorial reading: treat every mention as a construction test. Map the word to a quote filter, a named option structure, or a named calendar pair before any limit-order or two-contract order can be specified.

Separate the quote filter from the position

Liquid futures are described as often quoting a one-tick bid-ask difference, while option quote differences can be wider depending on the market. To avoid double meaning, the quote difference is labeled bid-ask and the option structure is named by type, such as bull-call, bear-put, or butterfly.

Name the option-spread by type

An option-spread is described as long and short options combined toward one objective, or as two long or two short options such as straddles and strangles. For a long-versus-short option combination, overall gain or loss is treated as the net difference across the legs.

A bull-call construction buys a near-the-money call and sells an out-of-the-money call. The matching put construction buys a near-the-money put and sells an out-of-the-money put and is named as a bear-put.

Identify the futures-spread by its components

A futures-spread is specified as buying one futures contract and selling another in a correlated market or an alternative contract month, and is typically identified by those components. A July-versus-December corn pairing is given as a calendar-spread that can be constructed in either direction.

Choose the order after the legs are named

When a futures-spread is entered with a named limit price, open-outcry execution is preferred over the electronic market. When fill certainty is prioritized over price, each contract is executed individually. Spread-margin is described as applying whether the futures pair is executed as one spread order or as two separate contracts.