May 18, 2009

Beginning on Sunday evening, May 17, 2009, for trade date Monday, May 18, 2009, the Exchange will list five new petroleum futures contracts for clearing through CME ClearPort. These new futures contracts are listed on, and subject to, the rules and regulations of the NYMEX. These new futures contracts will be cash-settled and will also be listed for trading by NYMEX through CME ClearPort Trading.

The new contracts are as follows:

These new cash-settled petroleum swap futures contracts will be available during normal trading hours on CME ClearPort. Electronic trading is conducted from 6:00 p.m. Sunday until 5:15 p.m. Friday (New York Prevailing time) via the CME ClearPort electronic clearing and trading systems. There is a 45-minute break each day between 5:15 p.m. (current trade date) and 6:00 p.m. (next trade date).

The fees for the new petroleum swap futures contracts are as follows:

In addition, the Exchange will allow exchange of futures for physical (EFP) and exchange of futures for swap (EFS) transactions to be submitted through CME ClearPort clearing. The EFP and EFS transactions in these futures contracts will be governed by the provisions of Exchange Rules 6.21 and 6.21A, respectively. Except for the new BALMO swap futures contracts which will be listed for up to two consecutive months beginning with the June 2009 contract month, the Exchange will list the new contracts up to 36 consecutive months beginning with the June 2009 contract month.

For further information, please contact Daniel Brusstar on (212) 299-2604.

Beginning on Sunday, May 31, 2009, for trade date Monday, June 01, 2009, the New York Mercantile Exchange, Inc. (“NYMEX” or the “Exchange”) will launch eight new petroleum futures contracts. Clearing services for these contracts will be available through CME ClearPort, a set of flexible clearing services open to over-the-counter (OTC) market participants to substantially mitigate counterparty risk and provide capital efficiencies across asset classes. The contracts are listed with, and subject to, the rules and regulations of NYMEX. These contracts will also be listed for trading by NYMEX through CME ClearPort. These new futures contracts will be cash-settled.

The new contracts are as follows:

Electronic trading and clearing is conducted from 6:00 p.m. Sunday until 5:15 p.m. Friday (New York Prevailing time) via the CME ClearPort electronic clearing and trading services. There is a 45-minute break each day between 5:15 p.m. (current trade date) and 6:00 p.m. (next trade date).

The fees for the new petroleum swap futures contracts are as follows:

In addition, the Exchange will allow exchange of futures for physical (EFP) and exchange of futures for swap (EFS) transactions to be submitted through CME ClearPort clearing. The EFP and EFS transactions in these futures contracts will be governed by the provisions of Exchange Rules 6.21 and 6.21A, respectively.

The Exchange will list the new contracts up to 36 consecutive months beginning with the June 2009 contract month, except for the Propane Non-LDH Mont Belvieu (OPIS) BALMO Swap Futures contract, which will be listed for up to two consecutive months, and the Propane Non-LDH Mont Belvieu (OPIS) Swap Futures contract, which will be listed for up to 48 consecutive months.

For further information, please contact Daniel Brusstar on (212) 299-2604.

The exchange, will close its trading floors in Chicago and New York on Monday, May 25, 2009, in observance of Memorial Day.

Effective Sunday, June 21 (trade date Monday, June 22), the trade pricing conventions for all energy Trade At Settlement (TAS) products listed on CME Globex will be re-benchmarked.

Currently on CME Globex, these products trade at settlement price equals 100, with valid trade prices ranging from 110 to 90. With this change, settlement price will equal 0, and valid trade prices will range from -10 to 10. Thus, these instruments may trade at both negative and zero price.

As a reminder, instruments eligible to trade at negative prices are identified by tag 871=24, tag 872=11 in the Security Definition (tag 35=d) message. Instruments eligible to trade at zero prices are identified by tag 871=24, tag 872=16 in the Security Definition message.

The TAS products with the new pricing convention will be available for customer testing in New Release on Monday, June 1.

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