Welcome to the CME Globex Notices for the week of May 21, 2007.

• Singapore CME Electronic Trading Customer Forum
• Proposed CBOT Merger Client Impact Assessment
• This Week
  • Reminder: Memorial Day Schedule
• May
  • Reminder: Discontinuing CME Globex Trader Licenses
• June
  • Reminder: CME Commodities Extended Electronic Trading Hours
  • CME Eurodollar Options Strike Expansion
  • ITC Market Data for NYMEX on CME Globex on CME Market Data Platform
  • Reminder: NYMEX Options Launch on CME Globex
• July
  • Reminder: Legacy Certification Environment Decommission

If you have any questions or concerns, please contact your CME Globex Account Manager at 312.634.8700; or at +44.20.7796.7100 in Europe.

Learn the latest in electronic trading on CME Globex  

FCMs, IBs, proprietary trading groups, ISVs and market data distributors -
Register today for the Singapore CME Electronic Trading Customer Forum.

The CME Electronic Trading Customer Forums are designed to bring CME and its customers together. You will receive updates and information regarding CME Globex platform changes, electronic trading policies and new offerings in the next 6-12 months.

These events are free and attendance is limited to CME customers.

The forum will cover:

CLICK HERE to register.

Proposed CBOT Merger Client Impact Assessment  
CME previously announced that it intends to migrate e-cbot products to CME Globex in a phased approach beginning Q1 2008, subject to completion of the CME-CBOT merger, which is expected to occur mid-2007, pending approvals by regulators, shareholders of both companies and CBOT members, as well as completion of customary closing conditions. In an effort to provide information as early as possible regarding this electronic trading migration, the CME/CBOT Client Impact Assessment document is now available for your reference at www.cme.com/CBOTImpact. Key topics discussed in this document are as follows:

1. Key Dates and Events
2. CME Globex System Impacts
   • Product-Specific Functionality
   • Fractional and Cabinet Pricing
   • Implied Spread Functionality
   • Matching Algorithms
   • Market Data Messages and Channels
   • Testing and Certification
3. Bandwidth Recommendations
4. Messaging Policy Implications
5. User Identification

For more information about this client impact document, please contact CME Globex Account Management or via phone at 312.634.8700 or at +44.20.7796.7100 in Europe.

Reminder: Memorial Day Schedule  
The CME Globex Memorial Day schedule, for Monday, May 28, is now available online.

Reminder: Discontinuing CME Globex Trader Licenses  
Effective May 31, 2007, no new CME Globex Trader licenses or IDs will be issued. CME anticipates CME Globex Trader will be decommissioned by the end of this year.

The limitation of CME Globex Trader to futures markets, aging functionality and infrastructure, and the declining user base have led to the decision to decommission CME Globex Trader. Traders may replace CME Globex Trader with a third-party application, CME EOS Trader or CME Galax-C handhelds to access CME Globex markets.

More information is available in the CME Globex Trader Update.

Reminder: CME Commodities Extended Electronic Trading Hours  
Effective Monday, June 4, 2007, trading hours for CME Commodity futures and options on CME Globex will be extended to virtually 24 hours a day. The markets will open for trading at 9:05 a.m. Central time (CT) Mondays and close at 1:30 p.m. CT Fridays, with a daily 60 minute trading halt and trade date roll at 4:00 p.m.

CME Eurodollar Options Strike Expansion  
Effective Sunday, June 17, 2007 (for trade date Monday, June 18), at customer requests, CME is expanding the recently launched strikes at 12.5 basis points intervals to all listed expirations, including all mid-curve options. With this change, strikes will be listed at 12.5 basis points intervals, ATM ± 6 (150 points) for all CME Eurodollar options. Outside the ATM ± 6 range, strikes will continue to be listed at 25 points intervals.

ITC Market Data for NYMEX on CME Globex on CME Market Data Platform  
Effective Sunday, June 24, 2007, ITC2.1 market data for NYMEX and COMEX products on CME Globex will be available via the CME Market Data Platform. With this launch, real-time NYMEX and COMEX on CME Globex market data will be available via CME Market Data Platform in both ITC2.1 and RLC formats.

NYMEX has announced that, as of September 28, CME Globex market data for NYMEX and COMEX products traded on CME Globex will no longer be available via the NYMEX ITC2.1 multicast feed.

More information on these changes, and the differences between CME and NYMEX ITC2.1 market data, is available online. CME Market Data Platform channel definitions for the new NYMEX and COMEX ITC2.1 channels in the New Release Certification environment are also available.

Reminder: NYMEX Options Launch on CME Globex 
Effective Sunday, June 24, 2007 (for trade date Monday, June 25), options on NYMEX Crude Oil and Natural Gas futures and COMEX Gold and Silver futures will launch on CME Globex.

For NYMEX options, CME is introducing variable length strike prices of up to 5 bytes in the Complete Instrument Code field in RLC market data messages and in SecurityDesc (FIX tag 107) in CME iLink messages. Currently, in these fields CME supports fixed strike prices within product groups of up to 4 bytes. More information on RLC market data is available in the CME Market Data Platform SDK RLC Message Specifications volume. More information on CME iLink messaging is available in the CME iLink SDK Message Specifications volume.

CME will host two mock trading sessions in the CME production environment for customers, on Saturday, June 16 and Saturday, June 23. More information on the mock trading sessions will be available soon.

These NYMEX options are currently available for customer testing in the New Release Certification environment.

More information about this NYMEX options launch is available at www.nymex.com.

Reminder: Legacy CME Certification Environment Decommission  
Effective July 1, 2007, CME is decommissioning the legacy CME certification environment. The new certification environments, launched earlier this year, provide greater flexibility and functionality for developing, testing and certifying customer applications. More information on the new certification environments is available at www.cme.com/cert.

New IDs for the legacy CME certification environment are no longer available.

Any customers currently connected to the legacy CME certification environment will need to migrate to the new environments before the July 1 cut-off. Please contact your CME Globex Account Manager for more information and to start your migration.