Effective April 16, 2026, and pending all relevant CFTC regulatory review periods, Chicago Mercantile Exchange Inc. (CME), The Board of Trade of the City of Chicago, Inc. (CBOT), New York Mercantile Exchange, Inc. (NYMEX) and Commodity Exchange, Inc. (COMEX) in their capacities as DCMs, will amend CME, CBOT, NYMEX/COMEX Rule 816 to include specified minimum Base Guaranty Fund requirements for Clearing Members eligible to clear (i) Event Contract Swaps; or (ii) transactions entered into during Supplemental Trading Hours (“STH”).

The Rule Amendments provide that CME Clearing will further delineate the minimum Base Guaranty Fund deposit requirements for Event Contract Swaps and Base products offered during STH, such that Clearing Members eligible to clear Event Contract Swaps will be subject to a $1 million minimum Base Guaranty Fund deposit and Clearing Members that have separately been approved to participate in STH will be subject to a $1 million minimum Base Guaranty Fund deposit.

Therefore, each Clearing Member will be subject to a required minimum Base Guaranty Fund deposit equal to the greater of:

1. $500,000 if eligible to clear CME, CBOT, NYMEX or COMEX futures and options on futures only;
2. $1,000,000 if eligible to clear Event Contract Swaps;
3. $1,000,000 if eligible to clear Base products during STH;
4.  $2,500,000 if clearing OTC spot, forward or swaps contracts that are not Event Contract Swaps; or
5. the Clearing Member’s proportionate share of the “Aggregate Guaranty Fund Deposit”.