World Business Chicago assisted Archipelago Holdings, Inc. with the retention of its global headquarters at 100 South Wacker.

Clients can trade more than 8,000 equity securities, including those listed on the NYSE, Nasdaq, AMEX,and NYSE Arca (formerly Archipelago Exchange, or Arca Ex, and the Pacific Exchange). The trading platform links traders to multiple US market centers where buyers and sellers meet directly in an electronic environment for fast order execution and anonymous market access. Archipelago merged in 2006 with the NYSE; both became subsidiaries of NYSE Group.