Category: Alerts and Notices

The Securities Information Processors (“SIPs”) will conduct data center failover testing as well as Market-Wide Circuit Breaker (“MWCB”) breach Level 1 and 2 on Saturday, July 22, 2023. In coordination with other market participants, MEMX will participate in the test and published a test script: MEMX 2023 Market-Wide Circuit Breaker Test Script. Certain members designated by MEMX […]

On Friday, June 30, 2023, MEMX Options released new versions of all its specifications.  Version 1.3 can be downloaded here.  The change summary is listed below and all details are outlined in the Errata included in the download. Additional Resources: Our Market Operations and Member Experience teams are here for any of your questions.   MEMX Market […]