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December 9, 2005 fos SEORSTARIAT

Ms. Jean A. Webb

Secretary

Commodity Futures Trading Commission

Three Lafayette Centre

1155 21TM Street, N.W.

Washington, D.C. 20581
Reference File #2608.01
Rule Certification

Dear Ms. Webb:

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

- Amended Regulations XX04.01 and XX07.02 for CBOT Soybean Board Crush
Spread Options per the attached texts (additions underlined, deletions bracketed
and struck through).

Revised Regulation XX04.01 will reduce the strike price listing interval for the referenced
options from integral multiples of 5 cents per bushel to integral multiples of 2 cents per bushel.
Revised Regulation XX07.02 will simplify the rounding conventions used in the assignment of
exercise prices for the Soybean Meal and Soybean Oil legs of the referenced options.

The CBOT intends to implement these amendments concurrently with the launch of trading in
the referenced options (date to be determined).

There were no opposing views concerning these amendments.

The CBOT certifies that these amendments comply with the Commodity Exchange Act and the
rules thereunder.

Sincerely,

Paul J. Draths
Vice President and Secretary

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Additions are bold and underlined. Deletions are [Bracketed-with-strikethrough].

XX04.01 Strike Prices - Trading shall be conducted for put and call options with strike prices in
integral multiples of [f¥e-S}] two (2) cents per bushel per Soybean Board Crush Spread. At the
commencement of trading for such option contracts, the following strike prices shall be listed: one
with a strike price closest to the previous day's Soybean Board Crush Spread price, the next ten
(10) consecutive higher and the next ten (10) consecutive lower strike prices closest to the previous
day's Soybean Board Crush Spread price; and all strike prices listed for all other option contract
months listed at the time. If the previous day's settlement price is midway between two strike
prices, the closest price shall be the larger of the two. When a sale in the underlying Soybean
Board Crush Spread occurs at a price greater than or equal to the tenth largest strike price, a new
strike price one increment higher than the existing strike prices will be added. When a sale in the
underlying Soybean Board Crush Spread occurs at a price less than or equal to the tenth smallest
strike price, a new strike price one increment lower than the existing strike prices will be added.
When a new strike price is added for an option contract month, the same strike price will be added
to all option contract months for which that strike price is not already listed. All new strike prices
will be added prior to the opening of trading on the following business day.

The Exchange may modify the procedure for the introduction of strike prices as it deems
appropriate in order to respond to market conditions.


XX07.02 Assignment of Exercise Prices to the Legs of the Soybean Board Crush Spread
Option — Upon the exercise of a Soybean Board Crush Spread option the Clearing Services
Provider assigns prices to the legs of the Soybean Board Crush Spread in the following manner:

a, assigned Soybean Meal price equals the Soybean Meal settlement price on the day of

exercise rounded to the nearest 1 $2. 50/to [85-06 O0/enif the SeybeanMeal-setth tp:
texth; 1+e-S200/, di; +athi f ]
PP adi, “st w > ROEITE OP *.

b. assigned Soybean Oil price equals the Soybean Oil settlement price on the day of exercise
rounded to the nearest 1 $0. 25/ewt. it. [S- Oeytif the Soybean-Oil sett tp: istessth

c. assigned Soybean price equals .022 times the assigned Soybean Meal price in $/ton plus
-11 times the assigned Soybean Oil price in $/cwt minus the Strike Price of the Soybean
Board Crush Spread option in $/bu.