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Thursday, September 22, 2022

Options Technical Update #2022 - 14
Nasdaq MRX Updates FIX Drop Replatform Technical Specifications



  • System Impact

Markets Impacted:

Contact Information:


Nasdaq MRX (MRX) has updated Replatform technical specifications for FIX Drop. The enumeration for Customer to Customer Crosses have been clarified in the following messages. Customer to Customer Crosses will be identified with Tag 9373 (AuctionType) = "C"

  • Execution Report

Tag 58 (Text) will provide the Cancel/Reject codes to describe the reason for the Cancel/Reject. Please refer to the FIX Drop Specifications for the details.

Please contact Market Operations with any questions.

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