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Alerts and Notices Systems Alerts

Systems Alert 21-04: Market Data Source for A-L Moved to Secondary

2/23/2021 12:40 ET – Due to impact from the market data ingestion issue experienced earlier today the Exchange has moved to its secondary market data source for the remainder of the symbol ranges, A-L. The change occurred from 12:37 ET – 12:38 ET.

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Systems Alerts Uncategorized

Systems Alert 21-03: RESOLVED – Market Data Ingestion Issue

2/23/2021 12:07 ET – The Exchange will resume trading in symbols M-Z at 12:10 ET, using secondary source market data for this symbol range. The market data ingestion issue has been resolved. All Exchange systems are now operating normally. 2/23/2021 10:32 ET – The Exchange has halted trading in symbol range M-Z as of 10:32 […]

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Alerts and Notices Systems Alerts

Systems Alert 21-02: 2/8/21 Issue Summary

On February 8, 2021, the Exchange experienced an issue with its Ticker Plant during pre-market start-up procedures. The Exchange delayed the open of the pre-market session until 07:14 ET. At 07:14 ET the Exchange opened utilizing back-up Ticker Plant processes. The Exchange moved back to primary Ticker Plant processes at 08:52 ET prior to the […]

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Alerts and Notices Trader Alerts

Trader Alert 21-06: Holiday Reminder – Closed February 15, 2021

MEMX will be closed Monday, February 15, 2021, in observance of the Presidents’ Day holiday. Normal trading will resume on Tuesday, February 16, 2021.  

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Alerts and Notices Systems Alerts

Systems Alert 21-01: Start of Pre-Market Session Delayed – RESOLVED

02/08/2021 07:17 ET – MEMX experienced an issue with its Pre-Market start-up process. The issue has been fully resolved. The Pre- Market session opened at 07:14 ET. All MEMX systems are operating normally. 02/08/2021 06:50 ET – MEMX is currently investigating a potential issue and will not open the pre-market session until further notice.

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Alerts and Notices Regulatory Notices

Regulatory Notice 21-02: Mandatory Participation in Regulation SCI Disaster Recovery Testing

Date: February 1, 2021 Description: Mandatory Participation in Regulation SCI Disaster Recovery Testing  

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605 Reports

December 2020

Rule 605 Disclosure of Order Execution Information

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Alerts and Notices Trader Alerts

Trader Alert 21-03: Regulatory Transaction Fee Adjustment Effective Thursday, February 25, 2021

This notice is being issued to inform you of the recently published Securities and Exchange Commission (SEC) order described in Fee Rate Advisory #2 for Fiscal Year 2021, in which the SEC announced the Section 31 transaction fee rate applicable to securities transactions on the exchanges and over-the-counter markets will be $5.10 per million dollars effective Thursday, February 25, 2021. Until that […]

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Alerts and Notices Trader Alerts

Trader Alert 21-01: Holiday Reminder – Closed January 18, 2021

MEMX will be closed Monday, January 18, 2021, in observance of Martin Luther King, Jr. Day. Normal trading will resume on Tuesday, January 19, 2021. 

Categories
605 Reports

November 2020

Rule 605 Disclosure of Order Execution Information