NEW YORK, July 5 /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 June 2007 was 1.408 million contracts, a 33% increase from 1.058 million contracts per day in the same period of 2006.

NYMEX electronic volume on the CME Globex® electronic trading platform was 634,448 contracts per day and represented a 439% increase over 117,684 contracts per day in June 2006 electronic volume on NYMEX ACCESS®. NYMEX floor-traded energy futures and options averaged 255,833 contracts per day for June 2007.

COMEX electronic volume on CME Globex averaged 102,266 contracts per day and represented a 674% increase over 13,219 contracts per day in June 2006 NYMEX ACCESS electronic volume. COMEX floor-traded average daily volume was 37,354 contracts for June 2007.

Average daily volume on NYMEX ClearPort® increased 14% to 305,230 contracts, from 268,792 contracts in the comparable period of 2006. The remaining volume of 72,424 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 April through June 2007, was $1.56, while the net average rolling rate per contract, including direct transaction costs, for the same period was $1.28. June rates per contract and transaction costs are estimated.

May Rate Per Contract -- Gross average rate per contract across all venues in May 2007 was $1.61, while the net average rate per contract, including direct transaction costs, was $1.33. This is compared to gross average rate per contract of $1.40, and a net average rate per contract of $1.29 for May 2006. Direct transaction costs were $8.496 million for May 2007 versus $2.719 million for May 2006.

Estimated June Rate Per Contract -- In order to assist users of our rate data, we are including estimated June rates per contract. Gross average rate per contract across all venues in June 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 $1.51, and a net average rate per contract of $1.35 for June 2006. Direct transaction costs were an estimated $8.180 million for June 2007 versus $3.641 million for June 2006.

Note: 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 June 2007 and 22 days for June 2006. Also, member rates were increased on May 1, 2007 for NYMEX Division contracts traded on CME Globex and the floor, as announced April 12, 2007.

  JUNE AVERAGE DAILY VOLUMES
  Venue                                            2007              2006
  NYMEX floor                                    255,833           496,883
  NYMEX electronic                               634,448           117,684
  COMEX floor                                     37,354            96,164
  COMEX electronic                               102,266            13,219
  NYMEX ClearPort®                               305,230           268,792
  Other                                           72,424            64,970
  Total                                        1,407,555         1,057,713


  THREE MONTH ROLLING AVERAGE DAILY VOLUME
  (For the period April through June)
  Venue                                            2007              2006
  NYMEX floor                                    256,643           536,740
  NYMEX electronic                               608,456           111,700
  COMEX floor                                     41,560           127,540
  COMEX electronic                               101,411            16,553
  NYMEX ClearPort®                               308,629           276,133
  Other                                           76,983            63,573
  Total                                        1,393,682         1,132,240


  MAY 2007 AVERAGE RATES PER CONTRACT
  Venue                                           Net RPC
  NYMEX floor                                      $1.31
  NYMEX electronic                                 $1.05
  COMEX floor                                      $1.24
  COMEX electronic                                 $1.23
  NYMEX ClearPort®                                 $1.75
  Other                                            $2.04
  Total Average Net Rate                           $1.33
  Direct Transaction Cost                          $0.28
  Total Average Gross Rate                         $1.61


  JUNE 2007 AVERAGE RATES PER CONTRACT
  Venue                                           Net RPC
  NYMEX floor                                      $1.31
  NYMEX electronic                                 $1.08
  COMEX floor                                      $1.24
  COMEX electronic                                 $1.22
  NYMEX ClearPort®                                 $1.61
  Other                                            $1.89
  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 the period April through June 2007)
  Venue                                           Net RPC
  NYMEX floor                                      $1.24
  NYMEX electronic                                 $1.03
  COMEX floor                                      $1.25
  COMEX electronic                                 $1.22
  NYMEX ClearPort®                                 $1.71
  Other                                            $1.93
  Total Average Net Rate                           $1.28
  Direct Transaction Cost                          $0.28
  Total Average Gross Rate                         $1.56

  NOTE: June rates per contract and transaction costs are estimated.



  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 athttp://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.

SOURCE: NYMEX Holdings, Inc.

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

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