Archipelago Holdings, Inc.

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 ArcaEx(R). In addition to offering core execution services, ArcaEx provides corporate clients with listing services and innovative data products. In September 2005, Archipelago acquired PCX Holdings, Inc., parent company of the Pacific Exchange and PCX Equities, Inc. allowing Archipelago to bring together the all-electronic trading of equity securities and options products thereby expanding and diversifying Archipelago's business lines. For more information please visit http://www.archipelago.com.