The story
The company was founded in Highlands Ranch, Colorado in 1972.
In October 1996, the company acquired South West Property for $312 million in common stock. At that time, South West owned 14,975 apartments and UDR owned 41,004 apartments.
In March 1998, the company acquired ASR Investments Corporation, which owned 7,550 apartments, for $313 million.
In December 1998, the company acquired American Apartment Communities II, which owned 14,001 apartments primarily in California, the Pacific Northwest, the Midwest and Florida.
From Wikipedia’s article on UDR, Inc., shared under CC BY-SA 4.0.6