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Effective Rule Filings Rule Filings

SR-MEMX-2021-06: Proposed Changes to Rules 11.6 and 11.8

Date Filed: April 30, 2021 Description: Proposed Rule Change Related to the Handling of Displayed Odd Lot Orders and Non-Displayed Orders that Become Locked or Crossed.

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Alerts and Notices Trader Alerts

Trader Alert 21-14: New Trading Platform Version on May 10, 2021 (Updated)

MEMX is releasing a new version of the trading platform Monday, May 10, 2021. This release contains the following changes with regard to order handling of resting displayed odd lot orders and resting hidden orders, as described below. These changes are currently available for testing in our MDE environment. Resting Displayed Odd Lot Orders – […]

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Alerts and Notices Product Notices

Product Notice 21-89: Additional Exchange Products Approved for Trading

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Alerts and Notices Product Notices

Product Notice 21-87 to 21-88: Additional Exchange Products Approved for Trading

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Alerts and Notices Trader Alerts

Trader Alert 21-13: MEMX Regulation SCI Disaster Recovery Testing

On February 1, 2021, MEMX published Regulatory Notice 21-2: Mandatory Participation in Regulation SCI Disaster Recovery Testing. In coordination with other market centers as part of the SIFMA organized industry test, and in support of Regulation System Compliance and Integrity requirements, MEMX will host a test of its secondary/disaster recovery facilities on Saturday, October 23, 2021.  The scope for […]

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Alerts and Notices Product Notices

Product Notice 21-86: Additional Exchange Products Approved for Trading

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Alerts and Notices Product Notices

Product Notice 21-85: Additional Exchange Products Approved for Trading

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Alerts and Notices Product Notices

Product Notice 21-83 to 21-84: Additional Exchange Products Approved for Trading

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Alerts and Notices Product Notices

Product Notice 21-82: Additional Exchange Products Approved for Trading

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Alerts and Notices Product Notices

Product Notice 21-81: Additional Exchange Products Approved for Trading