Alerts and Notices Trader Alerts

Trader Alert 23-14: MEMX Regulation SCI Disaster Recovery Testing

On February 8, 2023, MEMX published Regulatory Notice 23-01: Mandatory Participation in Regulation SCI Disaster Recovery Testing. In coordination with other market centers as part of SIFMA BCP testing, and in support of Regulation System Compliance and Integrity requirements, MEMX will host a test of its secondary/disaster recovery facilities on Saturday, October 14, 2023.  The scope for this weekend test will be a full feature test of all exchange functionality in order to ensure that MEMX is able to quickly relocate data center operations to Chicago, IL.

  • Designated members were notified by the Exchange on April 5, 2023
  • Designated members are required to verify connectivity to MEMX backup systems in Chicago no later than September 1, 2023
  • On test day each designated Firm will be required to:
    • Connect to the MEMX backup systems in Chicago
    • Execute at least one (1) trade in Tape A, B, and C
    • Confirm receipt of drop copy and market data, if so configured
  • All members are encouraged to voluntarily participate in testing with MEMX

MEMX 2023 Disaster Recovery Test Script

Contact Information

For questions regarding designation as a MEMX mandatory participant please contact MEMX Compliance:


For questions regarding sessions or general support please contact MEMX Market Operations:


For questions regarding network connectivity in our Chicago facilities please contact MEMX Network Operations: