August 21, 2026
MIAX Pearl RC-2026-129
Market for Underlying Security Used for Openings on MIAX Options, MIAX Pearl Options, and MIAX Sapphire Options for Newly Listed Adjusted Symbol MSTU2 Effective Monday, August 24, 2026
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August 21, 2026
MIAX Options RC-2026-135
Market for Underlying Security Used for Openings on MIAX Options, MIAX Pearl Options, and MIAX Sapphire Options for Newly Listed Adjusted Symbol MSTU2 Effective Monday, August 24, 2026
August 20, 2026
MIAX Options RC-2026-134
Update to New Selective Liquidity Auto Purge (SLAP) Functionality Implementation Date
August 20, 2026
MIAX Options RC-2026-133
Update to Aggregate Risk Manager Change to Adopt Origin Multiplier Implementation Date
August 20, 2026
MIAX Sapphire RC-2026-132
Market for Underlying Security Used for Openings on MIAX Options, MIAX Pearl Options, MIAX Emerald Options, and MIAX Sapphire Options for Newly Listed Symbols Effective Friday, August 21, 2026
August 20, 2026
MIAX Emerald RC-2026-96
Market for Underlying Security Used for Openings on MIAX Options, MIAX Pearl Options, MIAX Emerald Options, and MIAX Sapphire Options for Newly Listed Symbols Effective Friday, August 21, 2026
August 20, 2026
MIAX Pearl RC-2026-128
Market for Underlying Security Used for Openings on MIAX Options, MIAX Pearl Options, MIAX Emerald Options, and MIAX Sapphire Options for Newly Listed Symbols Effective Friday, August 21, 2026
August 20, 2026
MIAX Options RC-2026-132
Market for Underlying Security Used for Openings on MIAX Options, MIAX Pearl Options, MIAX Emerald Options, and MIAX Sapphire Options for Newly Listed Symbols Effective Friday, August 21, 2026
MIAX Futures
MIAX Futures-DCM-26-71
Effective / Approved
Rule Certification Submission Pursuant to Regulation 40.6(a); Amendments to Minneapolis HRSW Futures Daily Price Limit Rule
August 20, 2026
August 19, 2026
MIAX Options RC-2026-130
Amendment to Request for Response Messages to Remove Initiating Price for PRIME and cPRIME Auctions