CME Group proposed to amend its rules to require exchange clearing member firms that internally calculate average prices to transmit those prices and ultimate customer account allocations back to CME Clearing. Moreover, CME Group proposed to require that customers request average pricing before placing an order. CME Group self-certified its proposals (i.e., making them normally effective after 10 business days absent Commission objection), but indicated that its amendments would not be effective until July 31, 2017. CME Group proposed similar amendments on February 4, 2016, but withdrew them a few days later for discussions regarding technological issues that could have precluded clearing members’ compliance.