MX2 Options - Risk Port Issue

Incident Report for MEMX

Postmortem

MX2 Options experienced an issue with Risk Port and Drop Port configuration on September 21, 2026. MX2 Options customers experienced a disconnection from both Risk Ports and Drop Ports. Customers were able to reconnect at the sequence number last seen when the disconnection was resolved.

The root cause of the issue was a software configuration error in MX2 Options Risk Ports and Drop Ports. The error was corrected intraday and the issue is fully resolved.

The issue did not impact MEMX Options or MEMX Equities. Please contact MEMX Market Operations what any questions.

MEMX Market Operations | mops@memx.com | 1-833-415-6677

Posted Sep 21, 2026 - 16:30 EDT

Resolved

MX2 Options experienced an issue with Risk Port configuration. MX2 Options customers experienced a brief disconnection from Risk Ports at 12:20 PM ET. The MX2 Options Risk Port configuration issue has been resolved. Please contact MEMX Market Operations with any questions.

This issue does not impact MEMX Options or MEMX Equities.

MEMX Market Operations | mops@memx.com | 1-833-415-6677
Posted Sep 21, 2026 - 12:21 EDT
This incident affected: MX2 U.S. Options Exchange.