March 10, 2006

Ms. Jean A. Webb
Secretary be beso AAREAg
Commodity Futures Trading Commission
Three Lafayette Centre
1155 21* Street, N.W.
Washington, D.C. 20581
Reference File #2648.01
Rule Certification
Dear Ms. Webb:

Pursuant to Commission Regulation 40.6(a), the Chicago Board of Trade (CBOT®) hereby
submits the following:

- Establishment of an Electronic Market Maker (EMM) Program for CBOT Dow
Jones Industrial AverageTM Index ($25 Multiplier) Futures (“$25 Dow Futures”)
(Summary of program’s salient features is attached).

This initiative has been established pursuant to CBOT Rule 225.00 “General Enabling Rule for
Market Maker Programs”, which authorizes the Chief Executive Officer of the Exchange to
approve the implementation of such programs.

There were no opposing views in connection with this program.

The CBOT intends to implement this program concurrently with the launch of trading in $25
Dow futures (presently targeted for March 20, 2006).

The CBOT certifies that this program complies with the Commodity Exchange Act and the rules
thereunder.

Sincerely,

Paul J. Draths
Vice President and Secretary

b022106

*’Dow JonesTM, “The DowTM”, “Dow Jones Industrial AverageTM”, and “DJIA”, are service marks of Dow Jones & Company,
Inc. and have been licensed for use for certain purposes by the Board of Trade of the City of Chicago, Inc. (*CBOT®). The
CBOT’s futures and futures options contracts based on the Dow Jones Industrial AverageTM are not sponsored, endorsed, sold or
promoted by Dow JonesTM, and Dow JonesTM makes no representation regarding the advisability of trading in such product(s).


CBOT® $25 Dow Futures
Electronic Market Maker (EMM) Program

EMM Obligations

Participants in this non-exclusive EMM program will provide two-sided markets in CBOT $25
Dow futures on the CBOT’s electronic platform (e-cbot®), on a continuous basis during daytime
U. S. market hours for such futures, unless prevented from doing so as a result of extraordinary
circumstances beyond the EMM’s reasonable control or due to position limits.

EMM participants agree that they will make markets in $25 Dow futures at agreed upon
minimum size and maximum bid/offer spread levels.

EMM Incentives

In return for an EMM’s fulfillment of its obligations, such EMM will receive the following for
the period coinciding with EMM’s period of participation in this program:

Transaction fees: All CBOT electronic transaction fees will be rebated for EMM proprietary
transactions in CBOT $25 Dow futures during the market hours of their assignment.

Exchange Fee Credits:

If an EMM’s monthly volume equals at least 5% of the total monthly volume (defined as total
sides) in $25 Dow futures and the EMM is in the top three in terms of monthly EMM volume,
the EMM will be eligible to receive its “pro-rated share” of total “Exchange Fee Credits” for that
month. Pro-rated share is defined as the percent of total EMM volume that each of the three top
EMMs has generated for that month. For example, if EMM] trades 8,000 contracts, EMM2
trades 1,000 contracts, and EMM3 trades 1,000 contracts, EMMI receives 80% of Exchange Fee
Credits and EMM2/EMM3 each receive 10% of Exchange Fee Credits. Exchange Fee Credits
are defined as 20% of the total CBOT monthly revenue received from $25 Dow futures
transaction fees (less EMM fee rebates and Dow Jones supplemental fees.)

Term

The program will have an initial term through December 31, 2006, and may be extended if
mutually agreed.

Termination
EMM Agreements may be terminated for uncorrected material breach, upon 30 days advance

notice if average daily volume reaches 50,000 contracts per day for any calendar month, or by
mutual consent.