On September 15, 2025, clients experienced degraded performance beginning at 9:30 AM ET on MEMX Options (the “Exchange”).
The Exchange began investigating the issue immediately, which led to the decision to halt the options market at 9:52 AM ET.
Upon subsequent analysis, the Exchange identified an issue with the system configuration of the options market that resulted in significant performance degradation. The Exchange normalized the configuration issue and resumed trading at 2:45 PM ET.
MEMX Options will continue normal operations tomorrow, September 16, 2025.