https://www.cmegroup.com/tools-information/lookups/advisories/clearing/Chadv14-150.html
NYMEX Options Expiration Operational Procedures for the Trading Floor and Clearing Members...
CME Group is the world's leading and most diverse derivatives marketplace offering the widest range of futures and options products for risk management.
the trading floorclearing membersnymexoptionsexpiration
https://www.ecc.de/en/membership/clearing-members/cm-list
Clearing Members List
clearing memberslist