CME Reference Data Notices: August 10, 2023

Topics in this issue include:

• Now Available: CME Reference Data API Version 3 
• CME Reference Data API Enhancements – EBS Size Priority Matching - This Week

Now Available: CME Reference Data API Version 3

Clients now have access to CME Group's newest version of CME Reference Data API, named CME Reference Data API version 3 (RD APIv3), hosted on Google Cloud (GC).

Clients should review the Client Impact Assessment for timelines and details of these changes.

• Beginning on Saturday, September 30, RD APIv2 will be deprecated and no further enhancements will be made.
• RD APIv2 will be decommissioned on Friday, October 27, and no longer supported.

CME Group recommends customers should migrate to CME RD APIv3 as soon as possible.

These changes are currently available in Production and for customer testing in New Release.

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CME Reference Data API Enhancements – EBS Size Priority Matching

Effective this Sunday, August 13 (trade date Monday, August 14), CME Reference Data API will be enhanced to support EBS Size Priority Matching. EBS Market on CME Globex will offer a new match algorithm, Size Priority Matching, which prioritizes Large Order Size (LOS) orders to be matched before smaller orders.

Additional details on impacted products, timelines and new attribute value availability can be found in the EBS Size Priority Matching Client Impact Assessment.

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