Release Notes

March 2026 - UAT Environment

UAT Complete Production Start Production Complete Type Component Release Note

03/24/2026

03/24/2026

03/25/2026

Fixes

Exchanges

TT has implemented a temporary fix restoring OTC/Wholesale order entry for delta-neutral strategies on Euronext. Please note that OTC orders for the following combination types remain suspended until further notice: ICS 1 Sided, ICS 2 Sided, Spread vs Call/Put, and Ratio Spread Option.

(Ref 204991)

03/24/2026

Improvements

Exchanges

TT now supports the products available on the new Partition 3 on HKEX, enabling the trading of Futures and Options contracts for product symbols VAA and VBB.

(Ref 204988)

03/19/2026

Fixes

Options Chain

Fixed an issue that sometimes caused Options Chain (New) to display the incorrect product when switching between tabs.

(Ref 194189)

03/18/2026

03/20/2026

Improvements

Exchanges

TT has added support for displaying any block trades with the new block trade types of Block Standard, Block Historical and Block NFC Auction on the TT Time and Sales Widget. All these will be displayed with Type = Block on this widget.

(Ref 204640)

03/05/2026

03/06/2026

03/06/2026

Improvements

Excel Linking

We have released a new v26.0 of the TT Excel Add-In that includes an updated SSL certificate that expires 19 February 2027. No code changes are included other than the updated certificate.

(Ref 204326)

03/05/2026

03/06/2026

03/06/2026

Improvements

Trade App on TT (desktop)

We have released a new TT Desktop installer package v26.0.0. No code changes are included in this release, however this package includes the new TT Excel Add-In v26.0 which contains an updated SSL certificate that expires 19 February 2027.

(Ref 204322)

03/04/2026

03/04/2026

Improvements

FIX Services

U.S. Daylight Saving Time (DST) begins March 8 at 2:00 AM local time.

TT FIX services reset weekly on Saturdays at 22:00 UTC by default. If FIX sessions utilize the optional Reset Schedule in Setup to perform a daily reset or change TT's weekly default, please note that these times are configured in UTC. If users desire to maintain the same daily reset time relative to their local time zone, they may need to adjust the UTC time Reset Schedule in Setup.

For example, if a FIX client application configured a daily reset time in Setup to be performed at 22:45 UTC, the session would be reset at 16:45 CST prior to Daylight Savings Time going into effect. When DST begins, the reset would occur at 17:45 CDT if no action was taken to adjust the Reset Schedule.

FIX clients connected to FIX v291 or higher have the option to specify a time zone other than UTC in the Session Reset Schedule in Setup. Configuring a time zone other than UTC eliminates the need to adjust configuration for seasonal time changes.

(Ref 202141)

Production Release: 03/04/2026

Version: v305