Month: August 2023

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