cme @

Chicago Mercantile Exchange

20 South Wacker Drive
Chicago, IL 60606-7499
www.cme.com

December 21, 2006

Ms. Eileen Donovan

Office of the Secretariat

Commodity Futures Trading Commission
Three Lafayette Centre

1155 21°' Street, N.W.

Washington, D.C. 20581

RE: CME Rule 588.K. (“Globex No Bust Ranges”)
Submission No. 06-115

Dear Ms. Webb:

Chicago Mercantile Exchange Inc. (“CME” or “Exchange”) hereby notifies the Commission that
the Exchange has approved an amendment to Rule 588.K to remove the delisted NYMEX Gas Oil and
CPI Futures contracts from the list of Globex No Bust Ranges. The rule change is attached with the
removed language struck through.

The Exchange certifies that this regulatory advisory neither violates nor is inconsistent with any
provision of the Commodity Exchange Act or of the rules and regulations thereunder.
If you have any questions regarding this matter, please call me at (312) 648-5422.

Sincerely,

/S/ Stephen M. Szarmack
Director and Associate General Counsel

SMS/elm/6018 Sub No. 06-115.doc


588.K. GLOBEX No Bust Ranges

Futures No Bust Range
Eurodollar, E-mini Eurodollar and LIBOR 2.5 basis points or less
E-mini Eurodollar Bundle 2.5 basis points or less
T-Bills 5 basis points or less
Swaps 5 basis points or less
CR Futures S-basis-pointe-orless
Eurozone HICP Futures 25 basis points or less
Currency Futures (except British pound and Mexican 20 ticks or less

Peso)

British Pound Futures and Mexican Peso Futures 30 ticks or less

S&P 500 and E-mini S&P 500 6.00 index points or less
S&P Citigroup Growth 4.00 index points or less
S&P Citigroup Value 4.00 index points or less
S&P Midcap 400 and E-mini S&P Midcap 400 4.00 index points or less
S&P Smalicap 600 4.00 index points or less
E-Mini S&P Asia 50 12.00 index points or less
E-Mini MSC! EAFE 12.00 index points or less
S&P 500 Depository Receipts 0.60 index points or less
Russell 2000 and E-mini Russell 2000 4.00 index points or less
E-mini Russell 1000 4.00 index points or less
iShares Russell 2000 0.40 index points or less
Nasdaq-100 and E-mini Nasdaq-100 12.00 index points or less
E-mini Nasdaq Composite 12.00 index points or less
E-mini Nasdaq Biotechnology 12,00 index points or less
Nasdaq-100 Index Tracking Stock 0.30 index points or less
Nikkei 225 ($ and ¥) 60.00 index points or less
S&P 500 Technology SPCTR 3.00 index points or less
S&P 500 Financial SPCTR 3.00 index points or less
Housing Futures 2.00 index points or less
TRAKRS Futures. 25 cents or less

Goldman Sachs Commodity Index 2.50 index points or less
CME Weather 25.00 index points or less
CME Snowfall 50 ticks or 5 inches

Lean Hogs $0.0050 per pound or less
Live Cattle $0.0050 per pound or less
Feeder Cattle $0.0050 per pound or less
Pork Bellies $0.0050 per pound or less
Butter (Cash-Settled) $0.0075 per pound or less
Milk $0.20 per cwl. or less
Urea $3 per ton or less

DAP $3 per ton or less

UAN $3 per ton or less
Ethanol $.025 per gallon or less
NYMEX Crude Oil and NYMEX miNY Crude Oil $0.25 or less

NYMEX Brent $0.25 or less

NYMEX REBCO $0.25 or less

NYMEX Natural Gas and NYMEX miNY Natural Gas $0.05 or less

NYMEX Natural Gas (last-day) futures $0.05 or less

NYMEX Heating Oil and NYMEX miNY Heating Oil $0.01 or less

NYMEX RBOB Gasoline and NYMEX miNY RBOB- $0.01 or less

Gasoline

NYMEX Unleaded Gas $0.01 or less


Futures
NYMEX Propane

NYMEX Singapore 380 Fuel Oil
NAMEX (oas-GH

COMEX Gold and miNY Gold
COMEX Asian Gold

COMEX Silver and miNY Silver
NYMEX Platinum

NYMEX Asian Platinum

NYMEX Palladium

NYMEX Asian Palladium

COMEX Copper and miNY Copper
COMEX London Copper Grade A
COMEX Aluminum

COMEX London Primary Aluminum
COMEX London SHG Zinc

Futures Combinations

Eurodollar Combinations & E-mini Eurodollar Bundles
Non-Eurodollar, Non-Implied Eligible, Intra-Commodity

Futures Spreads
Implied Eligible Intra-Commodity Futures Spreads

Inter-Commodity Futures Spreads

Options on Futures

Interest Rate Options

All Eurodollar Covered Strategies

Prices below or equal to 5 basis points

Prices greater than 5 through 15 basis points
Prices greater than 15 through 25 basis points
Prices greater than 25 basis points

Interest Rate Options (Deltas greater than 50%)

Equity Index Options
Any premium level

Currency Options
Any premium level

Commodity Options
Any premium level

Agricultural Options
Any premium level

No Bust Range
$0.01 or less
$2.00 or less
S400-6He66,
$4.00 or less
$0.40 or less
$0.10 or less
$10.00 or less
$0.40 or less
$5.00 or less
$0.40 or less
$0.02 or less
$40.00 or less
$0.01 or less
$40.00 or less
$40.00 or less

2.5 basis points or less
5 ticks or less

Same as the no bust range of the
individual legs

The wider of the no bust ranges of the two
individual legs

No Bust Range

1 basis point
1 basis point
1.5 basis points
2 basis points
2.5 basis points
2.5 basis points

20% of premium (up to 3.00 index points
with a minimum of 1 tick) or less

20% of premium (up to 10 ticks with a
minimum of 1 tick) or less

20% of premium (up to 10 ticks with a
minimum of 1 tick) or less

20% of premium (up to $0.0025 per pound
with a minimum of 1 tick) or less