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.


Circuit Breaker

Trading halts on equities and derivatives markets to provide a cooling-off period during large, intraday market declines set at 7%, 13%, and 20% of the closing price for the previous day.