Market Data Notices: February 28, 2011

 CME Globex Performance Enhancements for Equity, FX and Agriculture Futures
CME Group is implementing an upgrade to the following futures markets on the CME Globex electronic trading platform that will result in significantly reduced message response times. Already among the fastest in the industry, in internal testing environments this upgrade reduced iLink and FIX/FAST response times by an average of 10%.

• Sunday, March 20
  • CME Equity futures and future spreads
  • CBOT Equity futures and future spreads
• Sunday, March 27
  • FX futures and future spreads
• Sunday, April 3
  • CME Agriculture futures and future spreads
  • CBOT Agriculture futures and future spreads

Please note: as a result of the reduced message response times, bandwidth utilization in these futures markets is expected to ultimately increase by as much as 10%. There will be no changes to functionality or messaging format with these performance improvements. Good 'Till Cancelled and Good 'Till Date (GTC/GTD) orders will not be impacted. This upgrade is designed to enhance our liquid, efficient and competitive marketplace for participants worldwide.

FIX/FAST Settlement Enhancements
Effective Sunday, April 3, FIX/FAST settlement enhancements will launch on CME Globex.

• Actual Preliminary
• Rounded Preliminary
• Final
• Theoretical Final

This launch will impact the settlement data blocks on Market Data Incremental Refresh (tag 35-MsgType=X) and Security Definition (tag 35-MsgType=d) messages. Details on the enhancements are available in the   Client Impact Assessment.

In addition, the following tag values will no longer be sent in the Market Data Incremental Refresh (tag 35-MsgType=X). As of this release, customer system must not rely on these values:

• tag 269-MDEntryType=M (Prior)
• tag 286-OpenCloseSettleFlag=4 (Price entry from previous day)

Certification is not required and there are no new templates. Customers and system providers are encouraged to test the enhancements thoroughly in New Release starting on Monday, February 21.

E-mini S&P 500 Select Sector Index Futures
Effective Sunday, March 14 (trade date, Monday, March 15), the following E-mini S&P 500 Select Sector Index futures will be listed for trading on CME Globex and for submission for clearing through CME ClearPort.

• Consumer Discretionary Sector Index
• Consumer Staples Sector Index Futures
• Energy Sector Index Futures
• Financial Sector Index Futures
• Health Care Sector Index Futures
• Industrial Sector Index Futures
• Materials Sector Index Futures
• Technology Sector Index Futures
• Utilities Sector Index Futures

Please view the   New Product Summary.

9 Month Eurodollar Double Butterfly Listing
Effective, Sunday, March 13 (trade date Monday, March 14), CME Group will add 9 month double butterfly spreads for the Eurodollar. (tag 1151-Security Group GE).

Double Butterfly consists of 4 instruments within the same product group and equally distributed maturity months (e.g., Z7-H8-M8-U8). Further details are available in the   Electronic Trading Concepts. Double Butterfly spreads are identified with DF in tag 762-SecuritySubType in the Security Definition (tag 35-MsgType=d) message.

S&P 500 Technology SPCTR and S&P 500 Financial SPCTR Futures Delisting
Effective close of business Friday, March 18, the following products will be delisted:

• S&P 500 Technology SPCTR Futures (tag 1151-SecurityGroup=TEC)
• S&P 500 Financial SPCTR futures (tag 1151-SecurityGroup=FIN)

E-Mini Copper Futures Expanded Listing Rules
Effective Sunday, March 20 (trade date Monday, March 21), CME Group will expand the listing rules for the E-Mini Copper futures contact for trading on CME Globex and open outcry. The listing rules are as follows:

 ITC 2.1 Specifications Price Indicator X Changing Transaction
Effective Monday, April 11, CME Group will re-introduce the reporting of phone trades using ITC 2.1 Category Code A “Bid/Ask/Trade - No Volume”, with a Price Indicator Code X “Changing Transaction” for the following open outcry products:

• Mini-sized Corn - XW
• Mini-sized Soybeans - XS
• Mini-sized Wheat - XW

Please note: Phone messages will be disseminated for in the manner as previously reported.

ITC 2.1 Category Code A "Bid/Ask/Trade-No Volume with a Price Indicator Code X "Changing Transaction" will be available for customer testing Friday, March 25 and Friday, April 1 during the ITC floor ticker test.

 FIX tag 996-UnitOfMeasure Change for Green Exchange CERplus Futures and Intercommodity Spreads
Effective Sunday, April 17, (trade date Monday, April 18), the UnitofMeasure (FIX tag 996) for CERplus^SM products will change as follows:

The unit of measure change for CERplusSM product will be available for customer testing in New Release Monday, March 21.

S&P Discontinued Indices
Effective this Friday, March 4, the following S&P Index will be discontinued at the close of business:

New S&P Real Time Indices
Effective this Monday, March 7, CME Group will begin disseminating the new indices detailed below. These indices will be transmitted every 15 seconds, via channel 109 of CME’s MDP.

 New S&P Real Time Indices
Effective Monday, March 14, CME Group will begin disseminating the new indices detailed below. These indices will be transmitted every 15 seconds, via channel 109 of CME’s MDP.

 ITC 2.1 Specification Message Changes
Effective Monday May 1, CME Group will begin disseminating ITC 2.1. Category Code N (Bid and Ask Market – No Volume) messages for some S&P indices. Bids and Asks will only be populated in the Category Code N message with the “Last” price for these indices continuing to be disseminated in the Category Code Y message. In addition, CME Group will implement a new ITC 2.1 Category Code “v” (little v) (Cumulative Volume – Expanded Volume) message. With this change, the Category Code “v” message will support a 12-btye volume field.

 New ITC 2.1 Specification Range Indicator Message
Effective Monday, May 1, CME Group will begin disseminating ITC 2.1 Category Code U Range message with a new Range Indicator of ”M” (Pre-Market) for select S&P Indices. Range indicator of “M” may be disseminated for Bids, Asks and Trades.

S&P will generate pre-market index data for certain select indices typically one hour prior to the actual start of trading day.

The pre-market index data will contain:

• Index values flat-lined with previous day’s index close levels
• Index Bid & Ask values computed using real-time pre-market quotes of the underlying constituents

The pre-market index data should be considered as an initialization phase for the index prior to the start of the trading day. All market data vendors are encouraged to distribute the pre-market index data with the Range Indicator of “M”. The index values produced during pre-market does not apply to the Daily Open, High or Low.

Message Examples:
aXF FU N03007621418000RbIIXU Y 2 0031882+T Mc
aXF FU N03007631418000RbIIXB Y 2 0040708+T Mc
aXL FU N03007641418000RbIIN X 2 0130740+T Mc

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

If you are interested in applying for space at CME Group’s co-location facility and haven’t already done so, please note CME Group will begin accepting requests for available space on April 4, 2011. Requests submitted on or after April 4, will be reviewed on a first come, first serve basis based on available capacity at the time of the request.

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.