Equity Residential is a United States-based publicly traded real estate investment trust that invests in apartments. As of December 31, 2022, the company owned or had investments in 308 properties consisting of 79,597 apartment units in Southern California, San Francisco, Washington, D.C., New York City, Boston, Seattle, Denver, Atlanta, Dallas/Ft. Worth, and Austin. It is the 5th largest owner of apartments in the United States and the 16th largest apartment property manager in the United States. Wikipedia