FIX issues standards for algorithm testing and certification

The FIX Trading Community has published Recommended Practices to standardize how firms test and certify trading algorithms. The guidance sets out test system configurations, testing workflows, message formats and the data to include in certification records so results and certificates can be shared with counterparties and regulators.

The guidance was produced by FIX’s Algorithmic Trading Working Group. It defines how test systems should be configured, how tests can be run and orchestrated across multiple environments when required, how testing results should be communicated, and how algorithms should be approved for production through a formal certificate. The practices include message descriptions and workflow steps intended to support automation and the exchange of results in a standard format.

Certificates created under the practices must contain standardised data to meet minimum legal requirements and to support richer records in firms’ internal algorithm inventories. Required elements include precise algorithm definitions that go beyond simple identifiers, full documentation of the tests performed and clear reporting of results so recipients can see what was assessed and why an algorithm passed or failed.

Jim Kaye, FIX executive director, noted:

Robust regulations exist to mandate the testing and certification of algorithms, but until now there has been a lack of consistency in how this requirement is met and communicated. FIX’s algorithmic trading working group has worked through this in detail to define best practices, and guide firms in implementing these.

FIX will run an online FIX Information eXchange workshop in the coming weeks to review the Recommended Practices with members. The Algorithmic Trading Working Group is next focusing on areas where algorithmic trading intersects with artificial intelligence, including modeling and testing agentic workflows, governance for those workflows, and use of FIX over AI-native protocols such as MCP and A2A. FIX member firms are invited to join the working group to contribute to that work.

The FIX Trading Community is an independent global association that maintains the FIX Protocol, the messaging standard used for trading. Committees in more than 60 countries work on topics including digital assets, reference data, carbon trading, AI, FICC and ETFs, and regional groups coordinate on local regulation and market structure. The new Recommended Practices are intended to reduce differences in how algorithm testing and certification are carried out and communicated across markets.