NMX Nymex Holdings

- NYMEX Electronic Trading Volume Increases 40% NEW YORK, July 16 /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, today announced that average daily volume was 1.826 million contracts for June 2008, a 29% increase from 1.414 million contracts per day in June 2007. NYMEX electronic volume on the CME Globex(R) electronic trading platform averaged 889,268 contracts per day for June 2008, representing a 40% increase over 634,390 contracts per day in June 2007 electronic volume. NYMEX floor- traded energy futures and options averaged 218,189 contracts per day for June 2008. COMEX electronic volume on CME Globex averaged 168,701 contracts per day for June 2008, and represented a 65% increase over 102,307 contracts per day in June 2007 electronic volume. COMEX floor-traded average daily volume was 37,531 contracts for June 2008. Average daily volume on the NYMEX ClearPort(R) clearing platform was 406,963 contracts for June 2008, compared to 305,225 contracts for June 2007, representing a 33% increase. The remaining volume of 105,532 trades per day consisted of other transactions which include position transfers and exchanges. Rolling Average Rate Per Contract -- The three month rolling average gross rate per contract for the period April through June 2008 was $1.55, while the average net rolling rate per contract, including direct transaction costs, for the same period was $1.31. June rates per contract and direct transaction costs are estimated (see Note below). Final May Rate Per Contract -- The following represents the final May 2008 rates per contract after adjustments to the estimated rate per contract we provided last month. Gross average rate per contract across all venues in May 2008 was $1.57, while the net average rate per contract, including direct transaction costs, was $1.33. This is compared to a gross average rate per contract of $1.61, and a net average rate per contract of $1.33 for May 2007. Direct transaction costs were $9.487 million for May 2008 versus $8.496 million for May 2007. Estimated June Rate Per Contract -- The following June average rates per contract are estimated (see Note below). Gross average rate per contract across all venues in June 2008 was $1.56, while the net average rate per contract, including direct transaction costs, was $1.32. This is compared to gross average rate per contract of $1.54, and a net average rate per contract of $1.28 for June 2007. Direct transaction costs were an estimated $9.344 million for June 2008 versus $7.914 million for June 2007. 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 ten business days after the end of the month. Also, the estimated figures are preliminary and June change 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 2008 and 21 days for June 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 exchange, offering futures and options trading in energy and metals contracts and clearing services for more than 350 off-exchange energy contracts. Through a hybrid model of open outcry floor trading and electronic trading on CME Globex(R) and NYMEX ClearPort(R), 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 June 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 June 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 June affect the general economy as well as oil and other commodity markets. We assume no obligation to update or supplement our forward-looking statements. -Tables Follow- JUNE AVERAGE DAILY VOLUME Venue 2008 2007 NYMEX floor 218,189 255,809 NYMEX electronic 889,268 634,390 COMEX floor 37,531 37,352 COMEX electronic 168,701 102,307 NYMEX ClearPort(R) 406,963 305,225 Other 105,532 78,795 Total 1,826,184 1,413,878 THREE MONTH ROLLING AVERAGE DAILY VOLUME (For the period April through June) Venue 2008 2007 NYMEX floor 221,867 256,635 NYMEX electronic 865,149 608,437 COMEX floor 38,755 41,559 COMEX electronic 172,450 101,424 NYMEX ClearPort(R) 417,590 308,627 Other 96,059 79,107 Total 1,811,870 1,395,789 MAY 2008 AVERAGE RATES PER CONTRACT Venue Net RPC NYMEX floor $1.62 NYMEX electronic $1.05 COMEX floor $1.69 COMEX electronic $1.46 NYMEX ClearPort(R) $1.59 Other $1.87 Total Average Net Rate $1.33 Direct Transaction Cost $0.24 Total Average Gross Rate $1.57 THREE MONTH ROLLING AVERAGE RATES PER CONTRACT (For the period March through May 2008) Venue Net RPC NYMEX floor $1.59 NYMEX electronic $1.03 COMEX floor $1.70 COMEX electronic $1.41 NYMEX ClearPort(R) $1.54 Other $1.88 Total Average Net Rate $1.31 Direct Transaction Cost $0.24 Total Average Gross Rate $1.55 JUNE 2008 ESTIMATED AVERAGE RATES PER CONTRACT Venue Net RPC NYMEX floor $1.61 NYMEX electronic $1.04 COMEX floor $1.72 COMEX electronic $1.48 NYMEX ClearPort(R) $1.58 Other $1.82 Total Average Net Rate $1.32 Direct Transaction Cost $0.24 Total Average Gross Rate $1.56 THREE MONTH ROLLING ESTIMATED AVERAGE RATES PER CONTRACT (For the period April through June 2008) Venue Net RPC NYMEX floor $1.61 NYMEX electronic $1.03 COMEX floor $1.71 COMEX electronic $1.43 NYMEX ClearPort(R) $1.54 Other $1.85 Total Average Net Rate $1.31 Direct Transaction Cost $0.24 Total Average Gross Rate $1.55 DATASOURCE: 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/

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