Category: Alerts and Notices

On Saturday, March 26, 2022, 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, March 26, 2022: Time (Eastern) Trading Status 8:00A  Session Available 8:30A  Pre-Market 9:30A  Market 12:00P  Post-Market 1:00P […]

Effective Tuesday, March 1, 2022, MEMX will be implementing the following changes to transaction fees, subject to filing with the SEC: Adopt a new NBBO Setter Tier, which provides an additive rebate of 0.0003 per share for executions of added displayed volume (other than Retail Orders) in securities ≥$1 that set the NBBO for members […]

On February 16, 2022, MEMX has released new versions of its MEMO FIX and MEMO SBE specifications. The new 1.8 versions can be downloaded here using the “Upcoming version” link. This specification update includes a new Cancel Reason and new Reject Reasons as listed below. Note: the MEMX MDE test environment already has this update and the […]