Notice to Members
Notice No. 557
10/23/2006
Informational Meeting for NYMEX Stockholders
Please be advised that the Definitive Proxy Statement and Proxy Card in connection with the COMEX Transaction were mailed on Friday, October 20, 2006 to NYMEX Stockholders who were Stockholders of record on September 12, 2006. Please note that if your address of record is a maildrop at One North End Avenue, you can obtain the documents from that location. If you have not received these documents, please contact Donna Talamo, Vice President and Assistant Corporate Secretary at (212) 299-2372.

The Special Meeting of NYMEX Stockholders to vote on the COMEX Transaction will be held next week on Tuesday, October 31, 2006. If you wish to vote by proxy, you need not attend this meeting to cast your vote. Please refer to the Proxy Statement for voting instructions.

An informational forum for NYMEX Stockholders regarding the COMEX Transaction is scheduled to be held on Thursday, October 26, 2006 at 3:00 PM at the NYMEX headquarters, One North End Avenue, 10th Floor, New York City.

NYMEX will provide a teleconference dial-in number to those NYMEX Stockholders who will be unable to attend this meeting. If you are a NYMEX Stockholder wishing to listen via teleconference, you MUST arrange to do so in advance (beginning on Wednesday, October 25, 2006) by contacting investorrelations@nymex.com or by calling the Membership Department at (212) 299-2381.

Please note that NYMEX Stockholders who participate via teleconference will be able to listen to the entire meeting, but will only be able to make inquiries during the question and answer period at the end of the session.

Inquiries regarding the aforementioned may be directed to Donna Talamo, Vice President and Assistant Corporate Secretary at (212) 299-2372.


Statement Regarding Available Information
Please note this is not intended to be a solicitation for proxy. In connection with the proposed COMEX Transaction, NYMEX has filed with the Securities and Exchange Commission and distributed to its stockholders a proxy statement. NYMEX's stockholders are urged to read the proxy statement in its entirety, and any other related documents NYMEX may issue, because they will contain important information about NYMEX, the transaction, the persons soliciting proxies in connection with the transaction and the interests of these persons in the transaction and related matters. These documents may be obtained for free at the SEC's website (www.sec.gov). Additional information on how to obtain these documents from NYMEX will be made available to stockholders.

NYMEX, and its directors and officers, may be deemed to be participants in the solicitation of proxies from NYMEX's stockholders in connection with the proposed private placement. Information about the directors and executive officers of NYMEX and their ownership of NYMEX stock is set forth in the proxy statement. Information regarding the interests of NYMEX's directors and executive officers in the proposed private placement are included in the proxy statement.

A registration statement relating to the securities to be sold in the offering has been filed with the SEC but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. This announcement shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state.

Should you have any questions or require any further information, please contact exchangeinfo@nymex.com