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- Regulatory Notice 21-05: Test Symbol Usage
- SR-MEMX-2021-06: Proposed Changes to Rules 11.6 and 11.8
- Trader Alert 21-14: New Trading Platform Version on May 10, 2021 (Updated)
- Trader Alert 21-13: MEMX Regulation SCI Disaster Recovery Testing
- Trader Alert 21-12: UAT on April 10, 2021
- Trader Alert 21-11: Holiday Reminder – Closed April 2, 2021
- SR-MEMX-2021-05: Extension of Clearly Erroneous Executions Pilot
- SR-MEMX-2021-04: Amendment to LLC Agreement of MEMX Holdings
- Trader Alert 21-10: New Trading Platform Version on March 22, 2021
- Trader Alert 21-09: MEMX has declared self-help against LTSE