News Release

NYMEX July 2007 Volume Averaged 1.446 Million Contracts Per Day, Up 16% Over Year Ago Period

Fri Aug 10 2007

NEW YORK, Aug. 10 /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 July 2007 was 1.446 million contracts, a 16% increase from 1.245 million contracts per day in the same period of 2006.

NYMEX electronic volume on the CME Globex® electronic trading platform was 636,774 contracts per day and represented a 484% increase over 108,992 contracts per day in July 2006 electronic volume on NYMEX ACCESS®. NYMEX floor-traded energy futures and options averaged 227,316 contracts per day for July 2007.

COMEX electronic volume on CME Globex averaged 113,109 contracts per day and represented a 1005% increase over 10,238 contracts per day in July 2006 NYMEX ACCESS electronic volume. COMEX floor-traded average daily volume was 38,566 contracts for July 2007.

Average daily volume on NYMEX ClearPort® was 365,427 contracts for July 2007, compared to 373,856 for July 2006. The remaining volume of 65,208 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 May through July 2007, was $1.55, while the net average rolling rate per contract, including direct transaction costs, for the same period was $1.28. Excluding a one-time NYMEX ClearPort incentive, the three month rolling gross average rate per contract for the period May through July 2007, was $1.58, while the net average rolling rate per contract, including direct transaction costs, for the same period was $1.31. July rates per contract and transaction costs are estimated.

Final June Rate Per Contract -- The following represents the final June rates per contract after adjustments to the estimated rate per contract we provided last month. Gross average rate per contract across all venues in June 2007 was $1.55, while the net average rate per contract, including direct transaction costs, was $1.28. This is compared to gross average rate per contract of $1.51, and a net average rate per contract of $1.35 for June 2006. Direct transaction costs were $7.914 million for June 2007 versus $3.641 million for June 2006.

Estimated July Rate Per Contract -- The following July average rate per contract is estimated. It includes the one-time NYMEX ClearPort incentive, which can be seen in our proforma table included below. Gross average rate per contract across all venues in July 2007 was $1.49, while the net average rate per contract, including direct transaction costs, was $1.23. 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. Gross average rate per contract across all venues in July 2007, excluding a one-time NYMEX ClearPort incentive, was $1.58, while the net average rate including direct transaction costs was $1.32. Direct transaction costs were an estimated $7.856 million for July 2007 versus $4.139 million for July 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 21 trading days for July 2007 and 19 days for July 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. Finally, to assist users of our rate information, for this month we are including a proforma reconciliation of the one-time NYMEX ClearPort incentive.

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.

  JULY AVERAGE DAILY VOLUMES
  Venue                                              2007              2006
   NYMEX floor                                     227,316           533,929
   NYMEX electronic                                636,774           108,992
   COMEX floor                                      38,566           151,540
   COMEX electronic                                113,109            10,238
   NYMEX ClearPort®                                365,427           373,856
   Other                                            65,208            65,988
   Total                                         1,446,400         1,244,543



  THREE MONTH ROLLING AVERAGE DAILY VOLUME
  (For the period May through July)
  Venue                                              2007              2006
   NYMEX floor                                     241,793           528,127
   NYMEX electronic                                622,150           125,786
   COMEX floor                                      40,578           116,113
   COMEX electronic                                107,161            13,855
   NYMEX ClearPort®                                324,049           314,908
   Other                                            75,963            65,665
   Total                                         1,411,694         1,164,454



  JUNE 2007 AVERAGE RATES PER CONTRACT
  Venue                                             Net RPC
   NYMEX floor                                       $1.29
   NYMEX electronic                                  $1.06
   COMEX floor                                       $1.21
   COMEX electronic                                  $1.19
   NYMEX ClearPort®                                  $1.64
   Other                                             $1.84
   Total Average Net Rate                            $1.28
   Direct Transaction Cost                           $0.27
   Total Average Gross Rate                          $1.55



  THREE MONTH ROLLING AVERAGE RATES PER CONTRACT
  (For the period April through June 2007)
  Venue                                             Net RPC
   NYMEX floor                                       $1.23
   NYMEX electronic                                  $1.03
   COMEX floor                                       $1.24
   COMEX electronic                                  $1.21
   NYMEX ClearPort®                                  $1.72
   Other                                             $1.92
   Total Average Net Rate                            $1.29
   Direct Transaction Cost                           $0.27
   Total Average Gross Rate                          $1.56



  JULY 2007 ESTIMATED AVERAGE RATES PER CONTRACT
  Venue                                             Net RPC
   NYMEX floor                                       $1.31
   NYMEX electronic                                  $0.91
   COMEX floor                                       $1.22
   COMEX electronic                                  $1.16
   NYMEX ClearPort®                                  $1.66
   Other                                             $1.86
   Total Average Net Rate                            $1.23
   Direct Transaction Cost                           $0.26
   Total Average Gross Rate                          $1.49



  THREE MONTH ROLLING AVERAGE RATES PER CONTRACT
  (For May, June actuals and July estimate, 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



  JULY 2007 ESTIMATED AVERAGE RATES PER CONTRACT
  EXCLUDING ONE-TIME NYMEX CLEARPORT® INCENTIVE
  Venue                                             Net RPC
   NYMEX floor                                       $1.31
   NYMEX electronic                                  $0.91
   COMEX floor                                       $1.22
   COMEX electronic                                  $1.16
   NYMEX ClearPort®                                  $2.01
   Other                                             $1.86
   Total Average Net Rate                            $1.32
   Direct Transaction Cost                           $0.26
   Total Average Gross Rate                          $1.58



  THREE MONTH ROLLING AVERAGE RATES PER CONTRACT
  EXCLUDING ONE-TIME NYMEX CLEARPORT® INCENTIVE
  (For May, June actuals and July excluding
   one-time estimate, 2007)
  Venue                                             Net RPC
   NYMEX floor                                       $1.30
   NYMEX electronic                                  $1.00
   COMEX floor                                       $1.23
   COMEX electronic                                  $1.21
   NYMEX ClearPort®                                $1.82
   Other                                             $1.92
   Total Average Net Rate                            $1.31
   Direct Transaction Cost                           $0.27
   Total Average Gross Rate                          $1.58

SOURCE: NYMEX Holdings, Inc.

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

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

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