On February 8, 2023, MEMX published Regulatory Notice 23-01: Mandatory Participation in Regulation SCI Disaster Recovery Testing. In coordination with other market centers as part of SIFMA BCP testing, and in support of Regulation System Compliance and Integrity requirements, MEMX will host a test of its secondary/disaster recovery facilities on Saturday, October 14, 2023. The scope […]
Category: Alerts and Notices
On Wednesday, August 30, 2023, MEMX Options released new versions of its MEMO specifications. Version 1.5 can be downloaded here. This update adds fields to the AllocationInstruction message in SBE and FIX, as well as a new value to the OrderRejectReasonCode field in FIX. For more details please see the Errata included in the specification download. […]
On Wednesday, August 23, 2023, MEMX options released new versions of its specifications pursuant to the first UAT to ensure the specifications are in line with the platform. Version 1.4 can be downloaded here. The change summary is outlined in the Errata included in the download. Please reach out to mops@memx.com if you would like your […]
Options Pre-Production Environment will be closed August 25, 2023, in preparation for Weekend Test #2 scheduled for Saturday, August 26, 2023. 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