Friday, April 30, 2021

Equity Trader Alert #2021 - 30
Nasdaq to Retire BRUT FIX and SUMO FIX Protocols for Nasdaq in the Fourth Quarter 2021


  • Service Change

Markets Impacted:

Contact Information:


Pending filing and approval by the SEC, effective Monday, November 22, 2021,1 Nasdaq is retiring the BRUT FIX and SUMO FIX protocol for the Nasdaq Stock Market. Effective immediately, Nasdaq will no longer accept requests for new or additional BRUT or SUMO FIX Ports. Clients should follow the steps outlined below to request new INET FIX connections before retiring their BRUT or SUMO FIX ports. Clients also have the option of switching to FIX Lite (Flite), RASH or OUCH protocols.

Currently, Nasdaq supports INET FIX (FIX 4.1, 4.2, BRUT & SUMO), FIX Lite (Flite), RASH and OUCH protocols for the Nasdaq Stock Market. The retirement of BRUT & SUMO FIX from Nasdaq aligns connectivity options for Nasdaq with the full Nasdaq family of equity exchanges (BX and PSX). Any BRUT or SUMO FIX clients, including broker-dealers or Service Bureaus, that wish to continue to deliver electronic transactions to the Nasdaq Stock will need to migrate to a supported protocol (INET FIX, Flite, RASH or OUCH) no later than Friday, November, 19, 2021.

From now until Friday, November 19, 2021, clients may run BRUT or SUMO FIX and a supported protocol concurrently to ensure a successful transition. Clients will not be required to maintain a formal BRUT/SUMO FIX – INET FIX (or other supported protocol) parallel period and can migrate to INET FIX (or supported protocol) service as soon as they are ready.

Clients should contact Nasdaq Subscriber Services or call (212) 231-5180 to begin the migration to the FIX service and follow the steps below.

Step Task Contact
Add INET FIX* and remove BRUT/SUMO FIX services Complete Nasdaq Equities Port Request Form to establish and/or remove port connections. Nasdaq Subscriber Services (212) 231-5180
Develop INET FIX* software messaging layer Code to the INET FIX Version 4.2 Order Entry Specification Nasdaq Trading Services; (212) 231-5180
Test INET FIX* in the Nasdaq Test Facility Establish a testing timeframe with Trading Services. Customers can perform production connectivity and software testing immediately. Nasdaq Trading Services; (212) 231-5180
Test INET FIX* in Production Work with Nasdaq to understand which weekends are available for production connectivity and software testing. Nasdaq lists Saturday testing dates here. Nasdaq Trading Services; (212) 231-5180
Cut-over to INET FIX* production service Client determines the go-live date and informs Nasdaq. Nasdaq Trading Services; (212) 231-5180

1: BRUT & SUMO FIX Retirement date is subject to change based on SEC approval.

*Customers may choose to migrate to other supported protocols: Flite, RASH, or OUCH.

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Nasdaq (Nasdaq: NDAQ) is a leading global provider of trading, clearing, exchange technology, listing, information and public company services. Through its diverse portfolio of solutions, Nasdaq enables customers to plan, optimize and execute their business vision with confidence, using proven technologies that provide transparency and insight for navigating today's global capital markets. As the creator of the world's first electronic stock market, its technology powers more than 90 marketplaces in 50 countries, and 1 in 10 of the world's securities transactions. Nasdaq is home to approximately 3,900 total listings with a market value of approximately $13 trillion. To learn more, visit: