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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 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 Trader Alerts

Trader Alert 21-12: UAT on April 10, 2021

On Saturday, April 10, 2021, MEMX is planing to make the trading platform available for a UAT for Members to test in the production environment. Test Schedule for Saturday, April 10, 2021: Time (Eastern) Trading Status 8:30A  Session Available 9:00A  Pre-Market 9:30A  Market 12:00P  Post-Market 1:00P Post-Market Closed 1:15P  Session Closed Our Market Operations and Member Experience […]

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Alerts and Notices Trader Alerts

Trader Alert 21-11: Holiday Reminder – Closed April 2, 2021

MEMX will be closed Friday, April 2, 2021, in observance of Good Friday. Normal trading will resume on Monday, April 5, 2021.  

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Alerts and Notices Trader Alerts

Trader Alert 21-10: New Trading Platform Version on March 22, 2021

MEMX is releasing a new version of the trading platform Monday, March 22, 2021. This release contains the following changes:  MEMX will now be accepting an optional limit price on primary pegged orders. Various minor performance enhancements are being released. This release is currently running in the MDE environment and is available throughout the week […]

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Alerts and Notices Trader Alerts

Trader Alert 21-09: MEMX has declared self-help against LTSE

MEMX has declared self-help against LTSE per rule 611 of Regulation NMS. Routing to this destination has been suspended as of 11:51:47 ET. All MEMX systems are operating normally. MEMX Market Operations | mops@memx.com | 1-833-415-6677 

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Alerts and Notices Trader Alerts

Trader Alert 21-08: UAT on March 6, 2021

On Saturday March 6, 2021 MEMX will conduct a weekend UAT for Members to test the March 15 release in production environment. Test Schedule for Saturday March 6, 2021: Time (Eastern) Trading Status 8:30A  Session Available 9:00A  Pre-Market 9:30A  Market 12:00P  Post-Market 1:00P Post-Market Closed 1:15P  Session Closed What is Changing? MEMX will now be accepting an […]

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Alerts and Notices Trader Alerts

Trader Alert 21-07: NMS Routing Roll Out Schedule Starting February 17, 2021

MEMX will begin routing on February 17, 2021. In order to participate, the MEMX Routing Agreement needs to be completed. Routing Agreement Phase 1: Wednesday, February 17, 2021 All NMS test symbols and the following list of symbols will be enabled in production for NMS routing: AAPL, ACST, AEZS, AMC, ARTL, BB, ED, GE, GEVO, […]

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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 Trader Alerts

Trader Alert 21-05: Fee Schedule Update Effective February 1, 2021

Effective Monday, February 1, 2021, MEMX will be implementing the following transaction fees. Changes are in bold text below. Trading Fees and Rebates Fee Code Description Fee/(Rebate) – Securities at or above $1.00 (“A”) Fee/(Rebate) – Securities below $1.00 (“B”) B, D or J Added displayed volume $(0.0034) (0.05% of total dollar value) Br, Dr or Jr […]