[9][10] The company also acquired an ownership interest in Groupe BEG, S.A., operator of shopping centers in Europe.

[13] In the following year, Simon acquired a majority interest The Kravco Company, owner of the King of Prussia, for $300 million.

[14] The company entered the outlet mall business in 2004 with the acquisition of Chelsea Property Group Inc. for $3.5 billion.

A GGP shareholder filed suit (Young v. Bucksbaum) against the company's board of directors for rejecting Simon's bid, alleging breach of fiduciary duty.

[24] In May 2010, Simon acquired Prime Retail's Prime Outlets-Puerto Rico in Barceloneta, Puerto Rico In August 2010, Simon acquired an additional 21 outlet malls, including locations in Williamsburg, Virginia, San Marcos, Texas and Hagerstown, Maryland for a total of $2.3 billion.

[25] Several months later, Simon made a $4.5 billion bid for Capital Shopping Centres Group plc in December.

[41] In August 2020, the company discussed repurposing large stores into warehouses and fulfillment centers for Amazon.

[48] In 2007, the company was sued for banning the use of Segways, which the plaintiff claimed was in violation of the Americans with Disabilities Act.

[49] In 2009, the company was sued by a nightclub for racial discrimination for allegedly blocking its main entrance since the majority of its clientele were black.