Welcome to the RJO Futures trading terms glossary. Within this glossary, you will find an expansive list of trading terms covering commodity, option, and futures trading terminology. Bookmark this section as a quick reference for definitions of trading terms as you browse the Internet and our site for more information on futures and options trading within the financial and commodities markets.



Derived from when quantities of the product specified on a contract often corresponded to the quantity carried in a railroad car, this is a loose, quantitative term sometimes used to describe a contract (e.g., "car of bellies").