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.

O

Omnibus Account

An account carried by one Futures Commission Merchant with another Futures Commission Merchant in which the transactions of two or more persons are combined and carried in the name of the originating broker—rather than being designated separately.