U.S. Options

The following option class will begin trading on the MIAX Options, MIAX Pearl Options, MIAX Emerald Options and MIAX Sapphire Options Exchanges on Thursday, September 24, 2026:

• Standard Nuclear, Inc. (STDN)

Market Makers can use the Member Firm Portal (MFP) to manage their option class assignments.  All LMM and RMM Option Class Assignments must be entered prior to 6:00 PM ET on the business day immediately preceding the effective date.  All changes made after 6:00 PM ET on a given day will be effective two trading days later.

MIAX Options and MIAX Emerald Options Primary Lead Market Maker (PLMM) assignments and un-assignments will not be supported via the MFP. 

Please contact MIAX Listings with any questions at Listings@miaxglobal.com or (609) 897-7308.