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Friday, June 24, 2022

Options Technical Update #2022 - 6
Nasdaq MRX Updates FIX Replatform Technical Specifications

 

Category:

  • System Impact

Markets Impacted:

Contact Information:

Resources:

Nasdaq MRX (MRX) has updated Replatform technical specifications for FIX. The changes are detailed below:

  • Allocation message: Tag 47: Rule80A(Capacity) will be included in the message to provide the ability to modify stock leg capacity post trade.
  • Member KillSwitch Trigger/Reset message: New message (MsgType = 'UDC') which is outbound from the exchange. It will indicate the timestamp when KillSwitch was triggered or reset.

Please contact Market Operations with any questions.

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