Futures

Effective Saturday, July 5, 2025, MIAX Futures will begin conducting Onyx Trading Platform "Saturday test sessions" that will be used for passive testing opportunities and to schedule targeted tests.
 
Subject to periodic blackouts, the system will be brought up on Saturdays for testing sessions. For official targeted tests, MIAX Futures will publish details through Futures Alerts. Firms interested in participating in a Saturday test session contact MIAX Futures Trading Operations at MIAXFuturesTradingOperations@miaxglobal.com or (609) 897-7303.
 
All order, trade and market data activity generated during the Saturday test sessions should be ignored and it is essential that firms proactively ensure that Saturday test data does not inadvertently enter into production environments. 
 
Activities related to routine Saturday testing sessions include:

• Friday evenings beginning at approximately 5:45 p.m. ET                
  • Firms can connect to their subscribed interfaces for the test session
  • Market data heartbeats will be produced from the test session
• Saturday beginning at approximately 7:00 a.m. ET
  • End of Recycle period
    • LOW (Start accepting orders, etc. via FOI and FEI)
    • Data dissemination via oFXD, FXD
  • Market data content which may be published
    • Simple Instrument Definitions
    • Complex Instrument Definitions
    • System State Messages
    • Instrument Trading Status Messages
    • ToM transactional data such as Last Sale, level one quotes, etc.
    • DoM transactional data including (but not limited to) Settlements, Open Interest, Order adds, etc.  
• Saturdays no later than 6:00 p.m. ET
  • System shutdown

 
Note: The MIAX Futures Member Firm Portal will not be available to support Saturday testing sessions.

If you have any questions, please contact MIAX Futures Trading Operations at MIAXFuturesTradingOperations@miaxglobal.com or (609) 897-7303.

To register or revise MIAX Futures Alert subscriptions, visit MIAX Email Subscriptions.