U.S. Options

The MIAX Options Exchange has just released updated Interface Specifications for the MIAX FIX Order Interface (FOI) and Clearing Trade Drop (CTD) to support an additional billing MPID.  This new field can be used to override the billing associated with the original MPID (SenderSubID) for orders. 

Please note that software changes and recertification are only necessary if you wish to use the additional billing MPID.

Summary of updates:
  1) Fix Order Interface (FOI v1.12):
      a) Added one new field to support an additional billing MPID Field (FIX Tag 9449)
 
  2) Clearing Trade Drop (CTD v1.7):
      a) Added two new fields:
          i) BillingMPID
         ii) Billing Clearing Number
      b) Changed the field name "MPID" to "Clearing MPID"

The Billing MPID change is currently available for Interface Testing in the MIAX Firm Test Bed #2 (FTB2) environment.  The Billing MPID feature will be available in the production environment on Friday, December 12, 2014.

MIAX Options Trading Interface Specifications are located at interface-specifications.  

Contact MIAX Trading Operations at TradingOperations@miaxglobal.com or (609) 897-7302 to discuss any specific issues and to arrange interface testing.