The great majority of CME Group futures contracts are executed on the electronic Globex platform but the situation is just the opposite for options on futures. The majority of options-on-futures are executed on the trading floor via open outcry.

• 96% of all CME Group futures contracts are executed on Globex; 4% by open outcry.
• 16% of all CME Group options on futures are executed on Globex; 84% by open outcry.

(February, 2009)