Essex Property Trust is a publicly traded real estate investment trust that invests in apartments, primarily on the West Coast of the United States. As of December 31, 2020, the company owned interests in 246 apartment complexes, aggregating 60,272 apartment units, and 1 office building comprising 106,716 square feet. It is the 10th largest owner of apartments in the United States and the 20th largest apartment property manager in the United States. Wikipedia