Customer Service
info@cmegroup.com
800-331-3332 or 312-930-2316

When a regulator investigates a complaint from a customer for possible rule violations, the information obtained is confidential, and will not be shared with the customer. Investigations sometimes lead to disciplinary action and a fine, but such action generally does not result in restitution to the customer. If you are seeking recovery of a loss from a dispute, you will need to pursue your claim through arbitration, reparations or the courts.