Release Notes

FIX Production Release Notes

New features are production released in a phased rollout to our globally distributed system. Therefore, a feature may be listed here which has not yet reached your workspace(s). However all of these features are available at uat.trade.tt.


Date Type Component Release Note

08/22/2025

Improvements

FIX Services

Added 2 values to tag 378 (ExecRestatementReason) in Execution Report (35=8) to enhance the reporting completeness of order passing:
125 - Order passing request initiate
126 - Order passing request undo

(Ref 187844)

Version: v286

08/22/2025

Improvements

FIX Services

Added 2 new values to OrderSource (tag 16117):
36: POT Child Router
37: Terminator

Tag 16117 is present in ExecutionReport (8), MultilegOrderCancelReplace (AC), NewOrderMultileg (AB), NewOrderSingle (D), OrderCancelReject (9), OrderCancelReplaceRequest (G), OrderCancelRequest (F), QuoteRequestResponse (b) and QuoteStatusReport (AI) message types.

(Ref 186675)

Version: v286

08/22/2025

Improvements

FIX Services

Added LME feed to FIX importer in TT to:
1. Receive execution notifications (NoE).
2. Receive full order audit trail including order acknowledgements.
3. Maintain an integrated view of both TT and non-TT trading activity for risk management and monitoring.
4. Integrate non-TT trading activity for market compliance analysis by TT Score.
5. Import trades from multiple platforms into TT allowing users to export a normalized and comprehensive audit trail via TT FIX Drop Copy.

(Ref 186674)

Version: v286

08/22/2025

Improvements

FIX Services

Added tag 16761, InsertTime to FIX message types 8, 9, AE and AR. This timestamp is for TT internal use and has been added to outgoing TT FIX messages in order to improve the FIX recovery process. Customers are advised not to drop this tag via TT FIX rule.

(Ref 186186)

Version: v286

08/22/2025

Improvements

FIX Services

Eurex OTC supports its native spread and strategies with price per leg.

To support its OTC trades, the trade capture message will include details of the spread instrument and legs in the report_legs tag. The first reports_leg tag will include details of the spread instrument along with price and side. Subsequent, report_legs in the message will carry details of the underlying instruments and prices.

(Ref 184717)

Version: v286

08/22/2025

Improvements

FIX Services

Added tag 393 (TotalNumSecurities) to spread fills (execution reports) sent by TT FIX for CME UDS covered options. The presence of tag 393 indicates the inclusion of futures allocations in the execution report. A value set of 1 indicates there is no futures allocation and a value of 2 will indicate the fill includes a futures allocation.

(Ref 184708)

Version: v286

08/22/2025

Improvements

FIX Services

Admin users now have the option to configure the time zone of the FIX session reset times. The field TimeZone under the FIX Session setup supports for time zone values consistent with the Olson database. This feature will eliminate the task of updating the session reset times every spring and fall.

All reset times currently in setup are unchanged and remain in UTC. Hence, there will be no impact to the ongoing session setups.

After the release, the users can update the time zone and reset times based on user preference.

(Ref 184683)

Version: v286

08/22/2025

Plan

FIX Services

Limited production deployment of the v286 Market Data, Recovery and Importer FIX Services began Aug 22nd. Production deployment of the services will be completed over the next 5 weeks.

Limited production deployment of the v286 Drop Copy and Order Routing FIX Services is planned to begin Sep 5th. Production deployment of the services will be completed over the following five weeks.

v286 FIX Services have been been deployed to UAT since since July 18.

This release includes changes to the FIX XML schema files. Clients are strongly encouraged to download and deploy the latest XML schema files from the URL below prior to release: [https://library.tradingtechnologies.com/tt-fix/general/System_Overview.html]

Release Notes for FIX v286 and prior releases can be reviewed at any time by going to [https://library.tradingtechnologies.com/release_notes/]

All TT FIX clients are strongly encouraged to subscribe to the weekly TT System Admin News and Updates email newsletter here: [https://www.tradingtechnologies.com/support-updates/]

(Ref 184657)

Version: v286

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