CME Globex Notice: April 11, 2011

New Mandatory iLink Tags
The new mandatory FIX tags which will enhance customer support and assist in market oversight are currently accepted in production on inbound iLink messages. Customers may begin populating these tags now; the final deadline is June 5, 2011. The five new tags will be used to identify:

• Front-end system
  • Should reflect the gateway application logging into the iLink session id
• Automated trading indicator flag
  • Does not have to dynamically change on a per-order basis from manual to automated
• Country of origin
  • Should reflect trader’s primary location; does not have to dynamically change based on trader's current location
  • For automated systems, the tag should denote the location of the system operator, not the trading system

To ensure customer readiness CME Group recommends the following action items must be completed prior to the June 5, deadline:

• System Providers
  All customer order routing systems must complete the mandatory certification via AutoCert+ and support the population of the new tags; CME recommends this be completed by early April 2011 to allow customers sufficient time to download the software and populate the tags prior to June 5th.
• Trading customers
  • Ensure customer country/state information is gathered in preparation of populating the tags. This should be completed prior to an updated trading system being deployed.
  • Implement any proprietary or third-party software that enables populating the new mandatory tags.
  • Populate the new tags prior to June 5.

These tags are available in New Release for customer testing. There are no impacts to FIX/FAST market data with this launch. Please contact your   Global Account Manager with any questions.

Please see the updated   Client Impact Document for a more detailed description of technical and data requirements.

MexDer Markets via CME Globex
In early Q3 2011, MexDer, Mercado Mexicano de Derivados markets will be available via CME Globex for iLink order routing and FIX/FAST market data. CME Group customers who would like to trade MexDer products must establish all appropriate agreements and accounts to be authorized to trade MexDer products. CME Group customers interested in accessing MexDer products via the CME Globex platform must develop and complete certification for new functionality and messaging specific to MexDer markets.

MexDer market data via CME Globex will utilize a new FIX/FAST template. The new template is currently available in New Release. A new mandatory certification suite will be available Monday, May 2, in AutoCert+ for customer systems planning to support MexDer via CME Globex.

MexDer markets via CME Globex will be available in New Release starting Monday, April 25.

The  client impact assessment provides detailed functionality and messaging for customer systems interested in supporting MexDer products via CME Globex.

FIX tag 996-UnitOfMeasure Change for Green Exchange CERplus Futures and Intercommodity Spreads
Effective Sunday, May 1, (trade date Monday, May 2), the UnitofMeasure (FIX tag 996) for CERplus^SM products will change as follows:

The unit of measure change for CERplusSM product is available for customer testing in New Release.

FIX tag 55-Symbol Changes for Energy Futures and Future Spreads
Effective Sunday, May 1, 2011, the FIX tag 55-Symbol values for Energy futures and future spreads will be changed as follows:

Market Data Platform channels and implied functionality will not be impacted.

To facilitate these changes, customers are asked to cancel all Good 'Till Cancel (GTC) and Good 'Till Date (GTD) orders for the impacted futures and spreads after their close on Friday, April 29. After 16:00 CT on Friday, April 29, all remaining GTC and GTD orders for these products will be cancelled by the CME Globex Control Center (GCC).

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

 Implied Soybean Crush Futures Spread Listing Expansion
Effective Sunday, May 15 (trade date Monday, May 16), the Implied Soybean Crush futures spread(tag 1151- Security Group=SOM) listing cycle will be expanded by adding 3 standard maturities, for a total of 11 standard maturities listed. .Currently only the first 8 standard maturities are listed.

The Implied Soybean Crush futures spread will be available for customer testing in New Release on Monday, May 2.

CME Co-Location Services Capacity Update Reminder
As our valued customer, we would like to update you on the capacity status of CME Co-Location Services, for our Phase 1 launch.

If you are interested in applying for space at CME Group's co-location facility and haven't already done so, CME Group is now accepting requests for space. Requests submitted will be reviewed on a first come, first serve basis based on available capacity at the time of the request.

Additionally, please note, if you are interested in participating in our Phase 1 launch, all contracts must be submitted by May 2, 2011.

To request legal and product related materials to review prior to April 4, or for additional information, please contact your   Global Account Manager at 312-634-8700, in Europe at 44-20-7796-7100, or in Asia at 65-6593-5574.