• Enhanced Option Expiration Behavior Report

      • To
      • Clearing Member Firms
      • From
      • CME Clearing
      • #
      • 18-228
      • Notice Date
      • 05 June 2018
      • Effective Date
      • 04 June 2018

    • In response to requests from clearing firms to provide a ‘quick’ reference guide regarding differing options’ behavior at expiration, CME Clearing is introducing enhancements to its current Contrary Instructions report on the CME website.

      For the full text of this advisory, please click here.

CME Group is the world’s leading derivatives marketplace. The company is comprised of four Designated Contract Markets (DCMs). 
Further information on each exchange's rules and product listings can be found by clicking on the links to CME, CBOT, NYMEX and COMEX.

© 2026 CME Group Inc. All rights reserved.