What Is an EFF? An EFF (Exchange of Futures for, or in Connection with Futures) is a transaction type that is privately negotiated and involves a simultaneous purchase and sale of futures contracts on different exchanges. Learn more about EFFs.
EFF Letter to CFTC: 01/04/10 ELX Letter to CFTC asking for Commission's support and approval to permit ELX to implement EFF rule
EFF Supplement: 11/12/09 ELX Letter to CFTC on EFF and Transitory Trading Chronology at CBOT
EFF Letter to CFTC: 10/20/09 ELX submits request to CFTC to stay the CME's October 16th self-certified Advisory Notice