• Amendments to Block Trade Transactions for Certain CME and CBOT Equity Index Futures and Options Contracts

      • To
      • Members, Member Firms and Market Users
      • From
      • Research and Product Development
      • #
      • SER-8150
      • Notice Date
      • 21 May 2018
      • Effective Date
      • 10 June 2018

    • Effective Sunday, June 10, 2018, for trade date Monday, June 11, 2018, and pending all relevant CFTC regulatory review periods, Chicago Mercantile Exchange Inc. (“CME”) and The Board of Trade of the City of Chicago, Inc. (“CBOT”) (collectively, the “Exchanges”) will implement amendments to standards for block transactions in certain CME and CBOT equity index futures and options contracts.

      Please refer questions to:

      Thomas Boggs             thomas.boggs@cmegroup.com            312 930 3038

      Erin Middleton              erin.middleton@cmegroup.com            312 341 3286

      Robert Sniegowski       robert.sniegowski@cmegroup.com       312 341 5991

      Frederick Sturm            frederick.sturm@cmegroup.com           312 930 1282

      Lucy Wang                   lucy.wang@cmegroup.com                   312 648 5478


      Please click here for PDF of SER-8150.

      Amendments to Block Trade Transactions for Certain CME and CBOT Equity Index Futures and Options Contracts

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.

© 2025 CME Group Inc. All rights reserved.