Critical System Information

Launch of BrokerTec Chicago Conflated TCP Market Data Group - This Week

On this Sunday, February 8, CME Globex will launch a new BrokerTec Chicago 50 Millisecond Conflated TCP Market Data Group for U.S. Treasury Actives.

Please review the client impact assessment for technical details and launch schedule.

This channel is currently available for customer testing in New Release.

Front-End Clients

Mandatory Upgrade: BrokerTec Sync Client 5.0 Upgrade - Now Overdue

This is a mandatory upgrade. BrokerTec Sync client versions 4.x or older are no longer supported as of June 2, 2025. All clients must be upgraded to the latest version 5.0.1.

The BrokerTec Sync client version 5.0.1 is now available to download on the BrokerTec Support Portal. This new client contains security and stability updates. 

Network Requirements

As our services migrate to Google Cloud, this new client version requires access to the following URLs over the public Internet from the BrokerTec Sync user’s workstation: 

BrokerTec Sync Portal
Current URLs (Client version 3.x/4.x)	New URLs (Client version 5.0+)
https://sync.brokertec.com   https://paging.numecentcloud.com	https://markets.api.cmegroup.com/brokertec/sync-portal  https://paging.numecentcloud.com (no change)

Installation Requirements

Please note that customers upgrading from a previous version of the BrokerTec Sync client will be prompted to reboot their workstation during the upgrade process. To minimize disruption, we strongly encourage customer support teams to schedule this upgrade at an appropriate time.

Any client inquiries for technical issues or production support should be directed to the CME Group Global Command Center (GCC) in the U.S. +1 800 438 8616, in Europe at +44 20 7623 4747, in Asia at +65 6532 5010 and in Japan at +81 3 6733 7559.

BrokerTec Global Front End Client Upgrade 11.8 - February 10

On Tuesday, February 10, there will be a new BrokerTec Global Front End (GFE) Client 11.8 software upgrade.

Firms that need to package the BrokerTec Client for distribution can download version 11.8 when it is available.

Customers using BrokerTec Sync will automatically be upgraded to the latest version.

This software release includes:

• Support for BrokerTec Chicago - Traders will be able to access and trade BrokerTec Chicago, a secondary U.S. Treasury (UST) Actives Central Limit Order Book (CLOB), designed to enable clients to efficiently manage their cash versus futures trading with greater precision.
  • BrokerTec Chicago instrument minimum order sizes are $200k for 2yr and 3yr, $100k for 5yr to 30yr. The GFE lot size display convention will continue to be in USD million, with a decimal portion to reflect the smaller $100/200k increments, to align with the BTEC Secaucus CLOB.
  • All BrokerTec Chicago tenors have a price precision of 1/16 of a 32nd (9 decimals).
• Buy in Bulk for EU Repo markets - Currently, the Buy in Bulk window supports the following Repo markets: Germany, France, United Kingdom, Spain and Belgium. All remaining BrokerTec repo markets will be supported in this version.
• Technical enhancements aimed at improving application stability.

Any client inquiries for technical issues or Production support should be directed to the CME Group Global Command Center (GCC) in the U.S. +1 800 438 8616, in Europe at +44 20 7623 474, in Japan at +81 3 6733 7559 or in Asia at +65 6532 5010.

Post-Trade

NewCME STP FIX - Update to New Release Host Connectivity - Now Available

CME STP FIX service will now incorporate the following managed and regional connectivity options in the New Release environment to better align functionality with Production.

CME STP FIX - Update to New Release Host Connectivity
Connectivity Option	Hostname	IP Addresses	Port	Asset Class	Usage
Managed	stpfix.api.uat.cmegroup.com		443	All	Client systems connect to one Host for all entitled STP trade data. CME Group manages regional connectivity. Customers should account for DNS update time during regional IP switch. Client systems must reestablish connections and resubscribe after weekly regional switch (Weekly on Wednesday) disconnections to resume receiving post-trade messages.
Regional	stpfix-a.api.uat.cmegroup.com	208.112.193.131	443	All	Clients can connect to both regions in parallel providing flexibility and redundancy. Clients can subscribe to the same or different STP trade data across regions based on their entitlements. Sequences of messages are not guaranteed to be the same across regions.
	stpfix-b.api.uat.cmegroup.com	208.112.193.10

Client systems are required to target the hostname(s). IPs are provided for convenience of local client side whitelisting purposes only. Clients can continue to use their existing entitled API IDs with this Host change.

This change does not affect Production connectivity.

NewCME STP FIXML - Service Availability and Regional Maintenance Update - March 15

Effective Sunday, March 15 (trade date Monday, March 16), CME Group will make the CME STP FIXML service available on a 24/7 basis and will introduce regional maintenance during weekends.

Clients should note that the x-cme-token, which is used by client systems for ongoing subscriptions and for multi-batch queries, will not be valid across regions. After regional maintenance, Client systems will receive a TradeCaptureReportRequestAck with the attribute @txt="x-cme-token is no longer valid. Please initiate a new subscription" and must reestablish their subscription to obtain a valid token.

This change is currently available in New Release (maintenance weekly on Wednesdays) and customers are highly encouraged to test their recovery processes.

CME STP FIXML service in New Release is not available on weekends.

NewCME STP FIX on Google Cloud - Service Availability and Regional Maintenance - March 15

Effective Sunday, March 15 (trade date Monday, March 16), CME Group will make the CME STP FIX service on Google Cloud available on a 24/7 basis and will introduce regional maintenance during weekends.

During the regional maintenance, client systems using the Managed Connectivity options will be disconnected and are required to reestablish their connections and resubscribe to continue the receipt of post-trade messages. Client systems using Regional Connectivity options should switch regions on their end upon disconnection.

View client connectivity options for more information.

CME STP FIX on Google Cloud - Production Internet Connectivity - April 26

As part of a phased migration of CME Straight Through Processing APIs to Google Cloud, Production internet connectivity options for CME STP FIX API are now available.

By Sunday, April 26, all clients must complete migration and connect to CME STP FIX API Production using only the Google Cloud hostnames.

CME STP FIX on Google Cloud is available in parallel to the current on-prem instance. When connecting in parallel to Google Cloud and on-prem instances, clients should ensure trades are not double-booked.

A mandatory supplemental certification for message recovery is now available for CME STP FIX on Google Cloud. 

Please contact Certification Support for Electronic Trading (CSET) with any questions in the U.S. at +1 312 930 2322, in Europe at +44 20 3379 3803, or in Asia at +65 6593 5593.

CME STP FIX on Google Cloud - Production Dedicated Connectivity - April 26

As part of a phased migration of CME Straight Through Processing APIs to Google Cloud, Production dedicated connectivity options for CME STP FIX API are now available.

By Sunday, April 26, all clients must complete migration and connect to CME STP FIX API Production using only the Google Cloud hostnames.

CME STP FIX on Google Cloud is available in parallel to the current on-prem instance. When connecting in parallel to Google Cloud and on-prem instances, clients should ensure trades are not double-booked.

A mandatory supplemental certification for message recovery is now available for CME STP FIX on Google Cloud. 

Please contact Certification Support for Electronic Trading (CSET) with any questions in the U.S. at +1 312 930 2322, in Europe at +44 20 3379 3803, or in Asia at +65 6593 5593.

Events and Announcements

Links in Historical CME Group Notices

Due to a vendor issue, links in email notices sent from CME Group prior to Wednesday, January 21, 2026, may be inactive.

Use the Notice Search on cmegroup.com to view historical notices.

NewRSS Feed Access for CME Group Notices - Now Available

CME Group has expanded its suite of RSS (Really Simple Syndication) feeds for our technical notices.

This service provides a powerful, industry-standard method for clients to receive automated, machine-readable updates on new features, products, and technology changes, designed for direct integration into your systems.

Access All Feeds

Timestamp Field Update to Client End-of-Day Reports - February 22

Effective Sunday, February 22 (trade date Monday, February 23) CME Group will update the precision for the following Timestamp fields to Nanoseconds in the BrokerTec Client End-of-Day reports, CEOD100 and CEOD101.

Timestamp Field Update to Client End of Day Reports
Field	Applicable Reports	Field Description	Data type
Transaction Time	CEOD100, CEOD101	Record message time, in UTC + 0	Datetime
Trade Execution Time		Trades only, trade time, in UTC + 0	Datetime

This change is currently available in New Release.

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