Transunion

TransUnion Trans Union, LLC is the third largest credit bureau in the United States, which offers credit-related information to potential creditors. Like major competitors Equifax and Experian, TransUnion markets credit reports directly to consumers.

TransUnion was created in 1968 by Union Tank Car Company as their holding company. Its credit business began with the purchase of Credit Bureau of Cook County CBCC in 1969. TransUnion was built from acquisitions of major city credit bureaus, with service agreements with local owners of bureaus which were not for sale.

In 1981, TransUnion was acquired as a subsidiary of Marmon Group, a holding company formed by Jay Pritzker and Robert Pritzker. The wealthy Pritzker family, most famous for owning the Hyatt hotel chain, began divesting the family's assets in late 2001 following the death of Jay Pritzker. Notable major divestitures include taking Hyatt Hotels Corp. public in 2009 and selling majority stake in TransUnion in 2010 1 .

In April 2010, the Pritzker family, with Penny Pritzker as TransUnion Chair, sold controlling interest of TransUnion to a new majority owner, the Chicago-based private-equity firm Madison Dearborn Partners LLC 2 . Madison Dearborn Partners LLC acquired 51 stake in TransUnion and the Pritzker family maintained 49 ownership.

Today, TransUnion operates 250 offices in the U.S. and in 24 other countries. It is based in Chicago, Illinois

In 2003, Judy Thomas of Klamath Falls, Oregon, was awarded 5.3 million in a suit against TransUnion. The award was made on the grounds that it took her six years to get TransUnion to remove a report.