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 be available:

  • Order Date (Single date only)
  • Firm ID
  • Status (Open or Closed)
  • RiskGroup ID
  • MPID
  • Account ID
  • Client Order ID
  • Exchange Order ID
  • Symbol
  • Side
  • Price
  • Order Type (Market, Limit, Pegged)
  • TIF
  • Ability to Cancel Orders

Test Schedule for Saturday, August 14, 2021:

Time (Eastern)Trading Status
8:30A Session Available
9:00A Pre-Market
9:30A Market
12:00P Post-Market
1:00PPost-Market Closed
1:15P Session Closed

Our Market Operations and Member Experience teams are here for any of your questions.  

MEMX Market Operations


MEMX Member Experience