CHICAGO, July 11 /PRNewswire-FirstCall/ -- Archipelago Holdings, Inc. (PCX: AX) today announced its June 2005 market transaction volume data for the Archipelago Exchange (ArcaEx(R)), a facility of the Pacific Exchange. Specifically, in NYSE-listed equity securities, ArcaEx's total trading market share was 3.3% in June 2005, up from 1.5% in June 2004 and down from 3.4% in May 2005.

In AMEX-listed equity securities, ArcaEx's total trading market share was 29.1% in June 2005, up from 24.8% in June 2004 and down from 31.0% in May 2005. ArcaEx's ETF total monthly share volume showed continued year-over-year growth with 1,993.7 (millions of shares) having traded in June 2005 compared to 1,117.9 (millions of shares) traded in June 2004 and down from 2,008.0 (millions of shares) in May 2005.

In Nasdaq-listed equity securities, ArcaEx's total trading market share was 22.7% in June 2005 down from 24.9% in June 2004 and 23.1% in May 2005.

    ArcaEx Transaction Volume Data

                                                 June       May        June
                                                 2005       2005       2004
    Total monthly volume of Nasdaq-listed
     equity securities (millions of shares)    39,286.3   35,677.0   34,089.0

    ArcaEx monthly volume of Nasdaq-listed
     equity securities (millions of
     shares)(1)                                 8,900.9    8,241.3    8,473.7
    ArcaEx share of total monthly volume
     of Nasdaq-listed  equity
     securities(%)(2)                             22.7%      23.1%      24.9%
    Total monthly volume of NYSE-listed
     equity securities (millions of shares)    42,587.5   40,613.9   35,512.6
    ArcaEx monthly volume of NYSE-listed
     equity securities (millions of
     shares)(1)                                 1,397.5    1,396.4      524.4
    ArcaEx share of total monthly volume
     of NYSE-listed  equity
     securities (%)(2)                             3.3%       3.4%       1.5%
    Total monthly volume of AMEX-listed
     equity securities (millions of shares)     5,540.7    5,224.7    5,446.3
    ArcaEx monthly volume of AMEX-listed
     equity  securities (millions of
     shares) (1)                                1,614.0    1,619.4    1,351.4
    ArcaEx share of total monthly volume
     of AMEX-listed equity
     securities (%)(2)                            29.1%      31.0%      24.8%
     ArcaEx ETF total monthly share volume
    (millions of shares)(1)                     1,993.7    2,008.0    1,117.9
    ArcaEx monthly customer order volume
     matched internally(%)(3)                     89.0%      88.9%      86.7%
    ArcaEx monthly customer order volume          11.0%      11.1%      13.3%
     routed out (%)(3)
    Number of trading days in period                 22         21         21


                          ArcaEx Most Active June 2005

                        Symbol               Share Volume         Market Share
    Nasdaq-100 Index(R)          (QQQQ)       565,502,259             28.9%
    SPDR(R)                      (SPY)        311,680,472             28.3%
    Semiconductor Holdrs(SM)     (SMH)        268,277,700             49.9%
    Intel(R)                     (INTC)       261,597,417             21.8%
    Microsoft(R)                 (MSFT)       257,983,456             19.1%
    Cisco Systems(R)             (CSCO)       204,449,082             18.7%
    Oracle(R)                    (ORCL)       198,085,708             20.4%
    Sun(R) Microsystems          (SUNW)       179,915,861             16.1%
    iShares Russell 2000 Index   (IWM)        162,534,815             42.4%
    Sirius Satellite(R)          (SIRI)       137,899,996             15.1%

Additional information on ArcaEx daily, weekly and monthly trading transaction volumes is publicly available in real time through the ArcaVision website accessible via http://www.archipelago.com. Additional data and enhanced functionality can be obtained through a free subscription to ArcaVision. Investors and ArcaEx clients can subscribe to ArcaVision at http://www.arca-vision.com.

     (1) For purposes of calculating monthly transaction volume on ArcaEx, we
         include all shares that are "handled" on ArcaEx for the month.
         Handled shares include both shares that are bought and sold during
         the month within our internal liquidity pool and shares that are
         routed to external market centers for execution.

     (2) ArcaEx monthly market share is calculated based on the number of
         shares handled on the ArcaEx system during the month as a percentage
         of total monthly volume. Total monthly volume is based on the number
         of shares of equity securities traded during the month on Nasdaq,
         AMEX or the NYSE, including, if applicable, exchange-traded funds, as
         reported in the consolidated tape.  The "consolidated tape" provides
         last sale price and volume of equity securities transactions to the
         public.

     (3) In computing the percentage of monthly client order volume matched
         internally and the monthly percentage of customer order volume routed
         out, we calculate the percentage based on the volume of individual
         customer orders, not the volume of matched trades (i.e., only
         counting one side of a matched transaction). For example, we
         calculate two customer orders matched internally on our system as two
         customer orders matched internally, and we include the volume of both
         the buy order and the sell order in computing our percentages of
         monthly customer order volume matched internally and routed out. We
         calculate one customer order routed to an external market center
         (which will be matched with an order at that other market center) as
         one outbound trade or one customer order. We calculate one customer
         order routed to us from an external market center and matched with an
         order on our system as one inbound trade or one customer order.

 

Archipelago Holdings (PCX: AX) operates The Archipelago Exchange(R) (ArcaEx(R)) the first totally open all- electronic stock exchange in the United States. ArcaEx trades all Nasdaq-listed equity securities and exchange listed equity securities, including those listed on the New York Stock Exchange(R), American Stock Exchange(R), and Pacific Exchange(R). In addition to offering core execution services, ArcaEx provides corporate clients with listing services and innovative data products. In 2004, Archipelago launched ArcaVision to provide corporate and trading clients with more transparent market data, analytical tools and access to market-wide and ArcaEx specific trading information. Archipelago Holdings completed its initial public offering in August 2004. For more information please visit http://www.archipelago.com.

ArcaEx's, past transaction performance is not necessarily indicative of its future results. Periodically, ArcaEX's transaction performance will experience fluctuations due to unforeseen factors effecting trading activity, including seasonality, general economic, political and market conditions, unforeseen market closures or other disruptions in trading. A description of the factors that may influence ArcaEx's volume of securities transactions are identified in the Company's filings with the Securities Exchange Commission, including its Report on Form 10-K for the fiscal year ending December 31, 2004 which is available on the Company's website at http://www.archipelago.com.

Certain statements in this press release may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on Archipelago's current expectations and involve risks and uncertainties that could cause Archipelago's actual results to differ materially from those set forth in the statements. There can be no assurance that such expectations will prove to be correct. Factors that could cause Archipelago's results to differ materially from current expectations include: general economic and business conditions, industry trends, competitive conditions, regulatory developments as well as other risks or factors identified in the Company's filings with the Securities Exchange Commission, including its Report on Form 10-K for the fiscal year ending December 31, 2004 which is available on the Company's website at http://www.archipelago.com. You should not place undue reliance on forward- looking statements, which speak only as of the date of this press release. Except for any obligation to disclose material information under the Federal securities laws, Archipelago undertakes no obligation to release publicly any revisions to any forward-looking statements to reflect events or circumstances after the date of this press release.

Archipelago Contacts:
Margaret Nagle - Press
312-442-7083
Patrick Murphy - Investor Relations
312-442-7005

SOURCE Archipelago Holdings
07/11/2005
CONTACT: Margaret Nagle - Press, +1-312-442-7083, or Patrick Murphy -
Investor Relations, +1-312-442-7005, both for Archipelago Holdings/
/Web site: http://www.archipelago.com /
(AX)
CO: Archipelago Holdings