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Alerts and Notices Trader Alerts

Trader Alert 21-29: New feature release Monday, September 27, and UAT and DR connectivity Testing on Saturday, September 25, 2021

On Monday, September 27, 2021, MEMX is releasing a new feature where Members can opt to change the behavior when the aggregate gross and net exposure limits are breached. The default behavior of the aggregate risk controls is to reject new orders and cancel open orders. The new functionality permits Members to optionally let open orders remain, while rejecting all […]

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Alerts and Notices Trader Alerts

Trader Alert 21-27: Fee Schedule Update Effective September 1, 2021

Effective Wednesday, September 1, 2021, MEMX will be implementing the following changes to transaction fees, subject to filing with the SEC: Updated the criteria for the Liquidity Provision Tier to be based on percentage of TCV. Adoption of a second Liquidity Provision Tier. Adoption of a second Displayed Liquidity Incentive (DLI) Tier. Increase of the […]

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Alerts and Notices Trader Alerts

Trader Alert 21-25: Member testing available on August 21, 2021

On Saturday, August 21, 2021, MEMX is participating in the UTP and CTA failover testing to the secondary data centers as well as Market-Wide Circuit Breaker testing. The trading platform will be available for Member testing. Test Schedule for Saturday, August 21, 2021: Time (Eastern) Trading Status 8:00A  Session Available 8:30A  Pre-Market 9:30A  Market 12:00P  Post-Market 1:00P […]

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Alerts and Notices Trader Alerts

Trader Alert 21-24: UAT on August 14, 2021

On Saturday, August 14, 2021, MEMX is planing to make the trading platform available for a UAT for Members to test in the production environment. While there are no trading platform changes, MEMX is releasing a new query tool that can be accessed through the MEMX User Portal. Below is a list of query filters that will […]

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Alerts and Notices Trader Alerts

Trader Alert 21-23: Fee Schedule Update Effective August 2, 2021

Effective Monday, August 2, 2021, MEMX will be implementing the following changes to transaction fees, subject to filing with the SEC:   Adoption of the liquidity removal tier. Increase of the fee to remove liquidity. Allowing aggregation of ADAV and ADV for affiliate Members with prior notice to MEMX. Changes are reflected in bold text below.  Trading Fees and Rebates Fee Code […]

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Alerts and Notices Trader Alerts

Trader Alert 21-22: Updated MEMO FIX and MEMO SBE Specifications July 26, 2021

On July 26, 2021, MEMX has released new versions of its MEMO FIX and MEMO SBE specifications. The new 1.6 versions can be downloaded here. Please note, this update is not a trading platform update/change, but rather a specification update to include details on Pending New Execution report messages and Order Reject Reason Codes as […]

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Alerts and Notices Trader Alerts

Trader Alert 21-21: UAT on July 17, 2021

On Saturday, July 17, 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, July 17, 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 21-20: Holiday Reminder – Closed July 5, 2021

MEMX will be closed Monday, July 5, 2021 in observance of Independence Day. Normal trading will resume on Tuesday, July 6, 2021. 

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Alerts and Notices Trader Alerts

Trader Alert 21-19: UAT on Saturday June 5, 2021

On Saturday, June 5, 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, June 5, 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 21-18: Fee Schedule Update Effective June 1, 2021

Effective Tuesday, June 1, 2021, MEMX will be implementing the following changes to transaction fees, subject to filing with the SEC:   Adoption of the Displayed Liquidity Incentive rebate, as described in Trader Alert 21-17.  Adoption of a liquidity provision tier. Increase of the rebate for Midpoint Peg orders that add volume.  Increase of the fee to remove volume. Reduction […]