Critical Updates
Final Stunnel Certificate Pinning Notification
End of Q2
Starting after Q2 2026 TT will no longer be providing/updating the stunnel.zip file which customers might be using to perform certificate pinning. The final update to the stunnel.zip file happened on April 2, 2026 and is now available for download. The final certificate in the stunnel.zip file expires on Oct 17, 2026. Prior to Oct 17, 2026 TT will migrate the CA from Digicert to AWS and new certificates will be emplaced (this could happen as early in UAT as September 1, 2026). These certificates will have much shorter lifetimes and will be rotated more often (eventually every ~40 days).
This is driven by the CA/Browser Forum decision to reduce certificate lifetimes to 47 days. Given that lifetime it’s no longer viable to create a certificate, provide the updated stunnel.zip file to customers for integration, and then emplace the certificate onto our endpoints.
Only customers who download the stunnel.zip file from https://library.tradingtechnologies.com/tt-fix/general/stunnel.zip are impacted. Affected customers should start migrating to utilize their local machine’s certificate trust store. Digicert and AWS are both established Certificate Authorities and should be available in the trust stores of modern operating systems.
Updates to the Configuring client connectivity (https://library.tradingtechnologies.com/tt-fix/order-routing/configuring-client-connectivity.html) will be made in the coming weeks to account for this adjustment.
CME Cryptocurrency Futures and Options transition to 24/7 Trading
May 29
Beginning May 29, the CME will offer 24 hour trading on the existing Cryptocurrency Futures and Options contracts that TT supports today. For information from the CME on this initiative, please see the Overview and Technical Details documentation from the exchange.
TT will support this launch on May 29. Testing of this functionality is available in UAT
Customers who wish to trade the 24 hour session as of May 29 should contact their TT Service Manager or Onboarding representative for assistance.
Recommendations for customers planning to participate in weekend trading of CME Crypto products:
- CME recommends creating a new Firm ID dedicated to weekend trading and enabling the GC2 setting “Enable weekend trading” for that firm
- Create a new CGW 7-day session in the CME portal under the new Firm ID
- Customers who would like to utilize a Market Segment Gateway (MSGW) session should create a new MSGW session for Segment ID 74
- Create a new TT account and link the new weekend-enabled connections to it – this account can be used for both weekday and weekend crypto trading
If clients choose to enable weekend trading on an existing Firm ID:
- The GC2 weekend trading setting will apply to all sessions under that Firm ID
- A new CGW 7-day session is still required for weekend crypto trading, and a separate new TT account is recommended to use with this connection
- Existing MSGW Segment ID 74 connections may continue to be used if already available
Important:
- CME strongly recommends against using an existing CGW 5-day session for trading of Crypto products when the Firm is enabled for 7-Day trading. GT orders placed through a 5-day session can remain active over the weekend and may receive fills while the session itself is down when this is the case.
For additional information on TT’s support for 24/7 trading on CME, including maintenance windows, support availability, etc. please refer to the TT Support for CME 24/7 Crypto Futures and Options Trading guide.
TTFIX.crt Update Notice
June 1
For customers whose FIX engine natively supports SSL encryption, or who have implemented FIX session encryption using STunnel, TT provides a TTFIX.crt file with the public certificates used by the TT platform FIX endpoint.
On 2026/04/03, TT updated the stunnel.zip file located in the Download Center in order to update the soon-to-be-expired certs in the TTFIX.crt bundle.
All TT customers who use STunnel must download the new zip file and apply it at any time before the new zip file update is applied in each TT environment, which will be:
- 2026/05/01 for UAT
- 2026/05/06 for SIM
- 2026/05/08 for Production – NY
- 2026/05/15 for Production – All Other Locations
- 2026/06/01 Previous Cert Expiration
Customers still using the old stunnel.zip file after the dates listed above will not be able to connect to the respective TT environments.
Added TT Platform STAR.TRADE.TT; valid from 2026/04/02 – 2026/10/17
Additional Resources
Please download the updated stunnel.zip here: https://library.tradingtechnologies.com/tt-fix/general/stunnel.zip
Directions for configuring a stunnel with TTFIX.crt can be found on the TT FIX Help Site here:
ICE: Product Group Mapping Update
June 19
As part of an upcoming update, TT will update product group mappings for certain products based on their Market Type ID. This change is currently in TT UAT for review.
Clients are requested to ensure they are properly permissioned and configured for the updated product groups to avoid any disruption in access or trading. This corresponds to Step 5,6,7 (Subscriber Market Data) in the setup process, https://library.tradingtechnologies.com/user-setup/ice-configuring-user-access-to-ice.html
Market Type ID 225 (MIC: IFEU)
- Products: JKB, CHP, JTB, JTO, JKO, JKC, JTC, CHB, JTB|JKB, JTC|JKC
- Current Product Group: IFSG (ICE Futures SG)
- New Product Group: IFEC (IFEU Commodities)
Market Type ID 237 (MIC: NDEX)
- Products: GOX, GOV, GOZ, GOW, GOY, and related spreads
- Current Product Group: IFSG (ICE Futures SG)
- New Product Group: ENDEX (ICE Endex)
Market Type ID 259 (MIC: IFAD)
- Products: INA, GAC
- Current Product Group: IFSG (ICE Futures SG)
- New Product Group: IFAD (ICE Futures Abu Dhabi – Non-S2F)
CDE: Mandatory Sequence Number Reset on Login
June 26
Coinbase Derivatives Exchange (CDE) will introduce a mandatory session-management change requiring all clients to reset sequence numbers on every Logon for all session-based order entry, market data, and drop copy APIs. TT will make the necessary platform updates to support this exchange requirement, and no client action is required.
Please note that while the CDE notice lists an effective date of June 12, TT has received an extension and will implement the required changes by June 26.
Additional Resources
Mandatory Sequence Number Reset on Logon
Updated: B3 FIX Order Entry API Decommission
previous title “Updated: B3: Binary Protocol”
TBD
TT will discontinue support for the FIX Order Entry API on a date TBD. After this time, only Binary Order Entry connections will be supported.
Customers currently using FIX order entry must migrate to Binary connections prior to this date to avoid any disruption in trading.
Client Notes:
- B3 limits the “Entering Trader” field to 5 characters on the Binary Order Entry API.
- B3 enforces a throttle limit of 150 orders per second. Orders exceeding this rate will be rejected. Clients can configure the Max Order Rate (orders/sec) setting on B3 Binary connections to manage this limit.
Additional Resources
Nord Pool: Throttling Messages Unavailability
May 27
The Throttling messages received from Nord Pool are currently displayed as News messages on TT. On May 27, Nord Pool will change the endpoints from which these messages are obtained. TT will not be ready for this change on Day 1. TT’s readiness date will be communicated in subsequent System News. Till that time, these throttling messages will not be available on TT.
EPEX: M7 6.21 Release
June 9
On June 9, EPEX will upgrade their M7 trading system to a new 6.21 release version. TT will modify the login message to EPEX to explicitly send orderBookMatching = Short as is required by this EPEX release. This change on TT will be transparent to TT customers, and no action is required from them for this.
TFEX: Support for Option Strategies
June 1
On June 1, TFEX will add support for strategies on the S50 Index and USD Options. Existing TFEX customers will be able to trade these strategies using their existing TFEX setup on TT.
These option strategies are available in the TT UAT environment. Interested customers must use the TFEX_DEV market in TT UAT, as this market connects to the exchange NEXT-B environment, which needs to be used for this testing.
Support for New LME Cross Order Functionality
June 22
On June 22, LME will add support for Cross Order functionality on its electronic trading platform, LMESelect.
TT will support this functionality on launch for both TT and LMETrader, with support via TT FIX to come at a later date.
This feature is now available in UAT . Details on exchange Dress Rehearsals to come once specifics are provided by the exchange.
Note : – Currently , TT provides support for LME Cross Orders only through TT Workspace and LMETrader . We do not support for LME Cross Order entry through FIX
Additional Resources
NASDAQ Commodities (NDAQ_EU) Decommission
June 30
On January 28, 2025, Nasdaq and Euronext announced an agreement to transfer open interest in relevant commodities products to Euronext and its clearing house “Euronext Clearing”.
Nasdaq Clearing AB and Nasdaq Oslo ASA have initiated formal service withdrawal processes for all Commodities products and services, effective June 27, 2025. This coordinated withdrawal follows the sale of Nordic power futures business to Euronext Clearing.
The Service Withdrawal Date is set to June 30, 2026, for both clearing and exchange services.
As of this date, TT will decommission access to the NDAQ_EU market.
Additional Resources
HKEX: Derivatives After Hours Trading (AHT) Enhancements
Q4 2026
HKEX will introduce the below enhancements to their After Hours Trading (AHT) session in Q2 2026:
- Equity index derivative product coverage expansion for US and UK Holidays
- Currently, on Memorial Day (US) and Spring Bank Holiday (UK), in the AHT session on HKEX, only the Currency and Metals AHT products are enabled for trading. This will be modified to include all AHT eligible products for trading on these US/UK holidays.
- On Christmas day, currently, only the Currency products are eligible for AHT session. This will be modified to include all MSCI and Currency products for trading on Christmas day.
- There is no change to the products that will be available for trading during the Day session on any of the holidays.
- Shortening of the market break between the Day and AHT session
- Currently, the market break between the Day and AHT session is of 45 mins. HKEX plans to start the AHT session 15 mins earlier, by reducing the market break to 30 mins.
- Widening of AHT Price Limits
- Currently, the price limits on all futures contracts traded in the AHT session is + or – 5%, and orders outside these price limits are rejected.
- The stock index futures traded on HKEX will be categorized into 2 baskets – flagship and non-flagship futures. While the initial price limits will be set at + or – 5% for both, those for the flagship products will be subject to a quarterly review, and can be periodically modified by HKEX.
- Index Option – Trade Resumption
- For the options contracts that are halted due to HKEX’s Trade Halt Mechanism, trading will be automatically resumed based on a deterministic model built by HKEX.
- Enhancement to the reference price determination methodology
- HKEX will modify their methodology used for determining the reference prices.
- Orders outside price limit boundary
- For orders entered during the Day session, and which may be outside the AHT price limits (price limits apply only to AHT session) and are carried over to the AHT session, such orders will not be rejected or canceled and can get traded outside the AHT price limits.
Fenics: Support for Sender Sub ID (Tag 50)
June 2026
TT plans to support sending the configured Sender Sub ID (Tag 50) to Fenics, on the order messages, from Jun 2026. This will be an optional field and any customers who do not wish to configure or use it, will not have any impact to their existing order entry flows for Fenics.
The exact go live date as well as the expected UAT date will be communicated in subsequent System News.
LME : TVTIC mapping change
Q2 2026
Currently, TT uses the TrdMatchID (Tag 880) published by LME to populate the TVTIC value for fills on both the spread and the individual legs. This value is displayed in the “ExchTransID” column on TTW.
At LME’s direction, TT will modify this logic for leg fills only, so that if the trade is based on an implied TT will use the LegAllocID (Tag 1366) published by LME to populate the field mapped to TVTIC. The TVTIC values used for the spread will not change.
This change is now available in UAT for clients to test .
WSE: API Upgrade
July 6
WSE will upgrade the APIs used for both market data and order entry on Jul 6. On this date, the current API will be decommissioned and the market will be fully migrated to the new API versions.
- No functional changes are being implemented on the market data feed for display on TT
- New Order Tag Defaults (OTDs) for Account Type and Trading Capacity will be introduced, and may be configured on TT
- TT will support the Self Match Prevention feature introduced along with this upgrade
- Customers are strongly advised to cancel any pending GTC/GTD/GTT orders before close of trading on the last day of the old API
TT’s participation for the mock tests being held by WSE for these tests is as below –
- TT will participate in the second mock test on 6 Jun. This will be an internal test for TT, and customer participation will not be possible.
- Only the W20 Sep26 future will be in scope for this testing. TT will upload the contracts received during the mock on a separate symbol – W20_MOCK, to avoid any impact to the contracts that are currently tradable in Production.
- TT will participate in the third mock test on 27 Jun, and TT will be open for customers to participate in this test.
Availability of the TT UAT environment will be communicated in subsequent System News.
Upcoming TT Desktop (TTD) Minimum Version Mandates
July 17
To maintain platform security and performance, TT has implemented minimum version requirements for all TTD users. Customers must plan their upgrades accordingly to avoid service interruptions. Note: The current TTD minimum version is 24.1.2.
Important Dates:
- July 17, 2026: Reminder – TTD v25.0.0 becomes the mandatory minimum version. Users on lower versions will be unable to log in after this date.
- April 2027 (Target): TTD v26.0.0 is scheduled to become the minimum version. Note: TTD v26.0.0 is currently available for download.
Customers who utilize the Excel Integration feature with TTD should also review the TT Excel Add In Expiration section above for information on an upcoming certificate expiry on April 29.
Download and Installation Guide
Euronext: RFC without leg prices
TBD
The Euronext feature of sending a Request for Cross on a multi-leg instrument without specifying the individual leg prices is currently unavailable on TT. The date on which this feature will be turned on will be announced in subsequent System News.
CME STP Google Cloud Migration
July 31
CME is migrating the STP FIX API from on-premises infrastructure to Google Cloud. TT support for CME STP FIX connectivity to Google Cloud is now available in both UAT. Clients currently using the legacy STP IP addresses should update their configurations to the new Google Cloud IP addresses.
UAT: STP FIX Details (Google Cloud)
- Remote IP Address*: 208.112.193.131, Port: 443
Backup Remote IP Address*: 208.112.193.10, Port: 443 - Enable SSL check
- URL: stpfix.api.uat.cmegroup.com
TT is completing the required AutoCert conformance for the cloud migration, once finished, the remote IP address will be published and system news will be updated.
CME has pushed the migration deadline to July 31, 2026. Clients are advised to migrate to the STP FIX service hosted on Google Cloud before this updated deadline.
Further updates will be communicated via System News if required.
Additional Resources
CME STP FIX – Update to New Release Host Connectivity
CME STP FIX on Google Cloud – Production Internet Connectivity
HKEX: OAPI RHEL library upgrade and recertification
September 2026
HKEX has announced an upgrade to its OAPI library from RHEL7 to RHEL8. While TT will need to make necessary changes to the software for this, this will be transparent to TT customers. TT will plan for and complete the required recertification with HKEX for this activity by the required date of 22 Sep 2026. Participation of customers in the exchange practice sessions is optional, but customers will still need to be required to submit a declaration to HKEX.
The deployment of these changes to TT UAT will be confirmed in subsequent System News.
Eurex/EEX/NODAL – T7 15.0 Upgrade
November 9
Eurex/EEX and NODAL have announced dates for the T7 15.0 upgrade , which will be launched in production on November 09 . Changes in simulation will be available from Aug 31 onwards .
The following enhancements will be introduced in T7 Release 15.0:
- Sponsored Access Stop Trading Functionality
- Improvements of the Enhanced Drop Copy Interface (EDCI)
- Off Book Usability Features
- Flex Instruments for Eurex EnLight
TT is awaiting preliminary specifications to determine any changes needed at our end .
MexDer: Trading Platform Migration (Eqlipse)
Q4, 2026
In Q4, MexDer will replace its current trading platform and matching engine with the Eqlipse multi-matching engine from Nasdaq, impacting both order entry and market data.
Trading Technologies is aware of this upgrade, actively working through requirements, and will be prepared for the migration in Q4. Further details on UAT availability, production launch date, etc. will be shared as the dates approach. For additional information from the exchange, please see their website:
Nord Pool: Trading API 2.0
TBD
Nord Pool plans to upgrade their API used for order entry and order management to a new version of Trading API 2.0 by end of May / early June of 2026. Their old API will continue to be operational in parallel till further notice.
TT will continue to be on the old API post the go live of this API upgrade, and TT’s plans to move to the new API will be communicated in subsequent System News.
HKEX: ODP API Upgrade
Q2 2028
HKEX plans to decommission the OAPI used for order entry in Q2 of 2028. In its place, a new ODP Binary API will be launched. Below are the expected timelines for this project –
- Stage 1 – Post Trade API
- Go Live – Q1 2028
- This involves migration of the current DCASS system to ODP-PT.
- TT does not connect to the current DCASS system, and hence no impact to TT.
- Stage 2 – Migration of the order entry and enhancements to market data API
- Go Live – Q2 2028
- Market Rehearsals in Q1 2028
- Exchange Certification testing to be completed in Q3/Q4 2027
- Expected TT UAT availability – End of Q2 – Mid of Q3
- Exchange test environment availability – Q4 2026
Further details will be provided in subsequent System News.
Disaster Recovery and Mock Testing
LME: Disaster Recovery and Order Entry Test
June 06
On June 6, LME will conduct a Disaster Recovery test for their clients, where Order Entry and Trades will be allowed. LME will then failover from Primary to Secondary, and confirm that all orders and trades are still accessible.
TT will provide support for this test via both TT and LMETrader.
TT Impact
Customers who will participate in this testing via TT must do so via the mock.trade.tt URL.
LMETrader Impact
Customers who will participate in this testing via LMETrader may use the normal URL, lme.trade.tt
TFEX: Business Continuity Test
June 13
TFEX will conduct its annual business continuity test on Jun 13. Further details regarding the schedule for the test will be communicated once announced by TFEX.
ASX : Production Business Continuity Testing
June 27
ASX will conduct a business continuity test in the production ASX 24 environment, including component failover from the primary ASX data centre (ALC) to the Secondary Data Centre (SDC). It is expected that all trading participants will participate in the test.
TT will provide support to all customers interested in participating in this exercise.
GFO-X : Market Rehearsal
July 11
GFO-X intends to deploy a new software release to Production Environment over the weekend of 11th to 12th July. The new release will be deployed ahead of the market open on Monday 13 July.
On the weekend before that , on 11th of July , GFO- X is offering an opportunity to its customers to participate in a dress rehearsal test . Vendors, Participants, and Clients are encouraged to perform testing on Saturday 11th July.
TT will provide support to all customers interested in participating in this exercise. Any interested participant should reach out to their onboarding representative .
New Markets
CME BrokerTec Chicago
The CME has launched a new US Treasury Central Limit Order Book, BrokerTec Chicago, which is co-located with CME’s Derivatives markets in Aurora. Additional details from the CME on this initiative may be found on the exchange website here:
On the TT platform, this market will be referred to as CME BrokerTec Chicago (CME_BrokerTec_Chicago).
Following are the anticipated milestones for this project:
| Milestone | Expected Date | Delivered Date |
| Delivery of New Market Onboarding Guide | 06/05/2026 | |
| TT Deployment to UAT | TBC | |
| Exchange Go-Live | TBC |
Additional details on availability in UAT and Production will be provided by early June.
New Products
Please Note: Trading Technologies’ default approach is to support every new product listed, on the product’s first day of trading, for all markets available on the TT trading platform. If a new product listing receives high-profile attention or is of significant industry importance, TT may announce support for it below. For all other new products announced by exchanges but not listed below, users should expect that TT provides support unless otherwise noted.
ASX : 90 Day Bank BIll Butterflies
June 10
ASX will be expanding the listing of Bank Bill Butterfly futures. Previously, only the front three butterflies were listed. From 10th June onwards, contracts will span all consecutive quarterly tenors from the front white to the last green quarter month (i.e. FLU6 through FLZ8). This change supports more efficient curve trading and improves alignment with outright futures expiries.
These products are now available in TT UAT environment for clients to run their tests
CME Eris Options
June 14
Eris Options will be available for trading on CME Globex starting Sunday, June 14 (for the Monday, June 15 trade date). We will update the System News once they are available in TT UAT for clients to review.
- Options on 2-Year Eris SOFR Swap Futures (YIT)
- Options on 5-Year Eris SOFR Swap Futures (YIW)
- Options on 10-Year Eris SOFR Swap Futures (YIY)
- Test Options on 2-Year Eris SOFR Swap Futures (0IT)
Additional Resources
ASX : Bloomberg AusBond Index Futures
August 24
ASX is targeting the launch of two new interest rate futures contracts tracking the Bloomberg AusBond Composite (BACM0) and Credit (BACR0) Indices.ASX is targeting the 24th of August to go-live with both futures contracts.The external ASX24 test environment is expected to be available from 13th of July 2026.
ICE_L: Global Interest Rates
TBD
TT’s will begin supporting ICE’s Global Interest Rates (Market Type ID: 264) tentatively by June 14. These products will be available under the product group “IFEU Financials”.
- Norwegian NIBOR futures (NIB) – ICE Three Month NIBOR® Futures
- Norwegian NOWA futures (NOA) – ICE Three Month NOWA Indexed Futures
- Japanese TONA futures (TOJ) – ICE Three Month TONA Indexed Futures
- Swedish STIBOR futures (STI) – ICE Three Month STIBOR® Futures
- South African Overnight Index Average Futures (ZAR) – ICE Three Month ZARONIA Futures
HKEX: Introduction of new contracts on Partition 3
TBD
HKEX will introduce new futures and options (both monthly and weekly) options contracts on new product symbols VAA and VBB. The market data for these will be obtained from a new partition (partition 3) which will be added by HKEX. These contracts are currently available in TT UAT for customer testing. Customers are required by the exchange to participate in at least one of the test sessions scheduled on every Thursday till 16 April, and confirm their participation to the exchange. Customers can participate in this test from the TT UAT environment.
Please note that, currently, both the monthly and weekly contracts are displayed on TT under the same product symbols VAA and VBB. TT will release a change to TT UAT at a later date to separate the weekly options into separate symbols of VAAW and VBBW. This change though will not impact the tradability of these contracts, and these contracts can be traded through TT UAT even today.