This excerpt taken from the NDAQ 10-K filed Mar 14, 2005.
Purchase of NIA
On January 1, 2005, Nasdaq purchased the remaining 50.0% interest in the Nasdaq Insurance Agency from AIG NJV, Inc. for nominal consideration. The purchase is not expected to have any impact on the operations of the agency. Beginning January 1, 2005, Nasdaq will consolidate the Insurance Agency in its consolidated results.