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Alerts and Notices Trader Alerts

Trader Alert 24-23: Holiday Reminder – Closed March 29, 2024

MEMX Equities and MEMX Options will be closed Friday, March 29, 2024, in observance of Good Friday. Normal trading will resume on Monday, April 1, 2024. MEMX Market Hours and Holiday Schedule Please contact Market Operations with any questions. MEMX Market Operations | mops@memx.com | 1-833-415-6677

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Alerts and Notices Trader Alerts

Trader Alert 24-22: MWCB Testing Opportunity – April 6, 2024

The Securities Information Processors (“SIPs”) will conduct data center failover testing as well as Market-Wide Circuit Breaker (“MWCB”) breach level 1 and 2 on Saturday, April 6, 2024, the final test in MEMX’s 2023 testing year. In coordination with other market participants, MEMX will participate in the test and publish a test script: MEMX 2023 […]

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Alerts and Notices Trader Alerts

Trader Alert 24-21: MEMX Options Released Version 1.7 of Its MEMO SBE and Risk Specifications

On Friday, March 1, 2024, MEMX Options released a new version of its MEMO SBE and Risk Specifications. Version 1.7 can be found here using the “upcoming version” link.  Release dates for the MEMX Options Development Environment (MODE) and Production to follow.  Updates are listed below and in the specification Errata included in the download: MEMO SBE v1.7 Risk Control […]

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Alerts and Notices Trader Alerts

Trader Alert 24-20: MEMX Options is Updating its Instrument Directory File and the Symbology Required in the Portal Risk Management Tool Monday March 11, 2024

As previously announced here, MEMX Options is updating its Instrument Directory file and making changes to the symbology required in the Firm and Risk Management User Portal tools.  The changes are currently available in the MEMX Options Development Environment (MODE) and production release date is Monday, March 11, 2024.  Updates are listed below: Instrument Directory Update: **NOTE: […]

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Alerts and Notices Trader Alerts

Trader Alert 24-19: Equities Fee Schedule Update Effective March 1, 2024

Effective Friday, March 1, 2024, MEMX will be implementing the following changes to transaction fees, subject to filing with the SEC: Changes are reflected in bold text below. Transaction Fees 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 $(0.0015) […]

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Alerts and Notices Trader Alerts

Trader Alert 24-18: MEMX Options is Updating its Instrument Directory File and the Symbology Required in the Portal Risk Management Tool

MEMX Options is updating its Instrument Directory file and making changes to the symbology required in the Firm and Risk Management User Portal tools.  The changes are currently available in the MEMX Options Development Environment (MODE) and production release date to follow. Updates are listed below: Instrument Directory Update: User Portal Update: Our Market Operations […]

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Alerts and Notices Trader Alerts

Trader Alert 24-17: Last and Final MEMX Options symbol rollout date is February 27, 2024

On Tuesday, February 27, 2024, MEMX Options plans on adding the following underliers: Underliers T-Z Thank you for supporting MEMX Options throughout the symbol roll out. Our Market Operations and Member Experience teams are here for any of your questions and MEMX Market Operations    mops@memx.com    1-833-415-6677       MEMX Member Experience    memberx@memx.com    1-833-415-6369 

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Alerts and Notices Trader Alerts

Trader Alert 24-16: Next MEMX Options symbol rollout date is February 23, 2024

On Friday, February 23, 2024, MEMX Options plans on adding the following underliers: Underliers P-S Additional dates and details: Our Market Operations and Member Experience teams are here for any of your questions.   MEMX Market Operations    mops@memx.com    1-833-415-6677       MEMX Member Experience    memberx@memx.com    1-833-415-6369 

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Alerts and Notices Trader Alerts

Trader Alert 24-15: Next MEMX Options symbol rollout date is February 21, 2024

On Wednesday, February 21, 2024, MEMX Options plans on adding the following underliers: Underliers M-O Additional dates and details: Our Market Operations and Member Experience teams are here for any of your questions.   MEMX Market Operations    mops@memx.com    1-833-415-6677       MEMX Member Experience    memberx@memx.com    1-833-415-6369 

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Alerts and Notices Trader Alerts

Trader Alert 24-14: Next MEMX Options symbol rollout date is February 16, 2024

On Friday, February 16, 2024, MEMX Options plans on adding the following underliers: Underliers H-L Additional dates and details to follow Our Market Operations and Member Experience teams are here for any of your questions.   MEMX Market Operations    mops@memx.com    1-833-415-6677       MEMX Member Experience    memberx@memx.com    1-833-415-6369