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: Trader Alerts
Trader Alerts, Regulatory Notices, and Product Notices have moved: MEMX Trading Alerts & 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
There are three requirements for Members to transition from pre-production to production: Certification: MEMX Options Service Desk can be found HERE. 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
Following a successful first test with participation from 11 firms sending orders and quotes, those quotes and trades being disseminated over Memoir and OPRA, mass cancel and risk functionality, drop copies, and OCC and CAT records being created, MEMX Options will host the second of three planned pre-launch production tests on Saturday, August 26, […]
Options Pre-Production Environment will be closed August 18, 2023, in preparation for Weekend Test #1 scheduled for Saturday, August 19, 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
The Securities Information Processors (“SIPs”) will conduct a Market-Wide Circuit Breaker (“MWCB”) Level 1, Level 2 and Level 3 test on Saturday, September 9, 2023. In coordination with other market participants, MEMX will participate in the test and published a test script: MEMX 2023 Market-Wide Circuit Breaker Test Script. Certain members designated by MEMX are required to […]
MEMX Options will host the first of three planned pre-launch production tests on Saturday, August 19, 2023. The following details how clients can participate, registration is not required. Symbol Directory: The symbol directory for the weekend test will be available on Tuesday, August 15. Order Entry: Members will be able to use their current Pre-Prod […]
MEMX will be closed Monday, September 4, 2023, in observance of Labor Day. Normal trading will resume on Tuesday, September 5, 2023. MEMX Market Hours and Holiday Schedule 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