UDR Inc. is a publicly traded real estate investment trust that invests in apartments. The company is organized in Maryland with its headquarters in Highlands Ranch, Colorado. As of December 31, 2024, the company owned interests in 169 apartment communities containing 55.696 apartment units in 21 markets in the United States. It is the 15th largest owner of apartments in the United States and the 31st largest apartment property manager in the United States. Wikipedia