This excerpt taken from the NDAQ 8-K filed Feb 20, 2008.
4. Real estate transactions
In connection with a proposed transaction, PHLX has formed the following three entities: (i) Market 1900 Associates GP, LLC a Pennsylvania limited liability company (Market GP), (ii) 1900 Market GP, LLC, a Delaware limited liability company (General Partner) and (iii) Market 1900 Associates, L.P., a Pennsylvania limited partnership (Limited Partner). The transaction involves the acquisition by General Partner and Limited Partner of certain partnership interests in an entity whose primary asset is real estate. Although PHLX is the sole owner of Market GP, General Partner and Limited Partner at the time PHLX formed these entities, upon the closing of the proposed transaction, these entities may be owned in whole or in part by another party unaffiliated with PHLX.