News Release

NYMEX August 2007 Volume Averaged 1.429 Million Contracts Per Day, Up 11% Over Year Ago Period

Thu Sep 13 2007

NEW YORK, Sept. 13 /PRNewswire-FirstCall/ -- NYMEX Holdings, Inc. (NYSE: NMX), the parent company of the New York Mercantile Exchange, Inc., the world's largest physical commodities futures and options exchange, announced today that average daily volume in August 2007 was 1.429 million contracts, an 11% increase from 1.290 million contracts per day in the same period of 2006.

NYMEX electronic volume on the CME Globex® electronic trading platform was 665,623 contracts per day and represented a 300% increase over 166,559 contracts per day in August 2006 electronic volume on NYMEX ACCESS®. NYMEX floor-traded energy futures and options averaged 227,887 contracts per day for August 2007.

COMEX electronic volume on CME Globex averaged 108,708 contracts per day and represented a 1,447% increase over 7,025 contracts per day in August 2006 NYMEX ACCESS electronic volume. COMEX floor-traded average daily volume was 31,314 contracts for August 2007.

Average daily volume on NYMEX ClearPort® was 331,420 contracts for August 2007, compared to 450,088 for August 2006. The remaining volume of 63,964 trades per day consisted of other transactions which includes position transfers and exchanges.

Rolling Average Rate Per Contract -- The three month rolling gross average rate per contract for the period June through August 2007, was $1.53, while the net average rolling rate per contract, including direct transaction costs, for the same period was $1.27. August rates per contract and direct transaction costs are estimated.

Final July Rate Per Contract -- The following represents the final July rates per contract after adjustments to the estimated rate per contract we provided last month. Gross average rate per contract across all venues in July 2007 was $1.50, while the net average rate per contract, including direct transaction costs, was $1.24. This is compared to gross average rate per contract of $1.53, and a net average rate per contract of $1.35 for July 2006. Direct transaction costs were $7.831 million for July 2007 versus $4.139 million for July 2006.

Estimated August Rate Per Contract -- The following August average rate per contract is estimated. Gross average rate per contract across all venues in August 2007 was $1.56, while the net average rate per contract, including direct transaction costs, was $1.28. This is compared to gross average rate per contract of $1.48, and a net average rate per contract of $1.27 for August 2006. Direct transaction costs were an estimated $9.174 million for August 2007 versus $6.280 million for August 2006.

Note: Because we are providing an additional level of up-to-date information regarding our recent monthly rates per contract, our volumes and rates press releases will be issued within approximately seven business days into the month. The above figures are preliminary and may change slightly due to the fact that the last days of the month have not been finalized and are thus subject to adjustments and corrections. Average daily volume is based on 23 trading days for August 2007 and 23 days for August 2006. As previously noted, member rates were increased on May 1, 2007 for NYMEX Division contracts traded on CME Globex and the floor, as announced April 12, 2007. Additionally, NYMEX member and non-member fees on the trading floor and COMEX member fees on the trading floor and the CME Globex® electronic trading platform were adjusted beginning on August 1, as announced July 11, 2007.

About NYMEX Holdings, Inc.

NYMEX Holdings, Inc. (NYSE: NMX) is the parent company of the New York Mercantile Exchange, Inc., the world's largest physical commodities futures and options exchange, offering futures and options trading in energy and metals contracts and clearing services for more than 320 off-exchange energy contracts. Through a hybrid model of open outcry floor trading and electronic trading on CME Globex® and NYMEX ClearPort®, NYMEX offers crude oil, petroleum products, natural gas, coal, electricity, gold, silver, copper, aluminum, platinum group metals, emissions, and soft commodities contracts for trading and clearing virtually 24 hours each day. Further information about NYMEX Holdings, Inc. and the New York Mercantile Exchange, Inc. is available on the NYMEX website at http://www.nymex.com/.

Forward Looking and Cautionary Statements

This press release may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act, with respect to our future performance, operating results, strategy, and other future events. Such statements generally include words such as could, can, anticipate, believe, expect, seek, pursue, and similar words and terms, in connection with any discussion of future results. Forward-looking statements involve a number of assumptions, risks, and uncertainties, any of which may cause actual results to differ materially from the anticipated, estimated, or projected results referenced in forward-looking statements. In particular, the forward-looking statements of NYMEX Holdings, Inc., and its subsidiaries are subject to the following risks and uncertainties: the success and timing of new futures contracts and products; changes in political, economic, or industry conditions; the unfavorable resolution of material legal proceedings; the impact and timing of technological changes and the adequacy of intellectual property protection; the impact of legislative and regulatory actions, including without limitation, actions by the Commodity Futures Trading Commission; and terrorist activities and international hostilities, which may affect the general economy as well as oil and other commodity markets. We assume no obligation to update or supplement our forward-looking statements.

AUGUST AVERAGE DAILY VOLUMES
  Venue                                              2007              2006

  NYMEX floor                                      227,887           530,172
  NYMEX electronic                                 665,623           166,559
  COMEX floor                                       31,314            73,644
  COMEX electronic                                 108,708             7,025
  NYMEX ClearPort®                               331,420           450,088
  Other                                             63,964            62,142
  Total                                          1,428,916         1,289,630



  THREE MONTH ROLLING AVERAGE DAILY VOLUME
  (For the period June through August 2007)
  Venue                                              2007              2006

  NYMEX floor                                      236,723           528,096
  NYMEX electronic                                 646,212           147,606
  COMEX floor                                       35,608            93,338
  COMEX electronic                                 108,062            10,268
  NYMEX ClearPort®                               333,944           370,932
  Other                                             69,157            65,276
  Total                                          1,429,706         1,215,516



  JULY 2007 AVERAGE RATES PER CONTRACT
  Venue                                                     Net RPC

  NYMEX floor                                                $1.28
  NYMEX electronic                                           $0.91
  COMEX floor                                                $1.22
  COMEX electronic                                           $1.18
  NYMEX ClearPort®                                         $1.70
  Other                                                      $1.87
  Total Average Net Rate                                     $1.24
  Direct Transaction Cost                                    $0.26
  Total Average Gross Rate                                   $1.50



  THREE MONTH ROLLING AVERAGE RATES PER CONTRACT
  (For the period May through July 2007)
  Venue                                                     Net RPC

  NYMEX floor                                                $1.30
  NYMEX electronic                                           $1.00
  COMEX floor                                                $1.23
  COMEX electronic                                           $1.21
  NYMEX ClearPort®                                         $1.68
  Other                                                      $1.92
  Total Average Net Rate                                     $1.28
  Direct Transaction Cost                                    $0.27
  Total Average Gross Rate                                   $1.55



  AUGUST 2007 ESTIMATED AVERAGE RATES PER CONTRACT
  Venue                                                     Net RPC

  NYMEX floor                                                $1.52
  NYMEX electronic                                           $0.97
  COMEX floor                                                $1.36
  COMEX electronic                                           $1.26
  NYMEX ClearPort®                                         $1.59
  Other                                                      $2.04
  Total Average Net Rate                                     $1.28
  Direct Transaction Cost                                    $0.28
  Total Average Gross Rate                                   $1.56



  THREE MONTH ROLLING AVERAGE RATES PER CONTRACT
  (For June, July actual and August estimate, 2007)
  Venue                                                     Net RPC

  NYMEX floor                                                $1.37
  NYMEX electronic                                           $0.98
  COMEX floor                                                $1.26
  COMEX electronic                                           $1.20
  NYMEX ClearPort®                                         $1.63
  Other                                                      $1.91
  Total Average Net Rate                                     $1.27
  Direct Transaction Cost                                    $0.26
  Total Average Gross Rate                                   $1.53

SOURCE: NYMEX Holdings, Inc.

CONTACT: Investors, Keil Decker, +1-212-299-2209, or Media, Anu
Ahluwalia, +1-212-299-2439, both for NYMEX Holdings, Inc.

Web site: http://www.nymex.com/

Corporate Communications

+1 312 930 3434
Email