Product Modification Summary: Amendments to Contrary Exercise Instructions and At-the-Money (ATM) Instructions for Certain COMEX Metals Option Contracts - Effective January 1, 2018
To
Clearing Member Firms; Back Office Managers
From
CME Clearing
#
17-298
Notice Date
01 August 2017
Effective Date
01 January 2018
Amendments to COMEX Rules to Eliminate Contrary Exercise Instructions and Amend At-the-Money Instructions for Certain COMEX Metals Option Contracts.