Healthpeak Properties (NYSE: DOC) is a real estate investment trust focused on healthcare-related real estate across the United States. Originally founded as Health Care Property Investors, the company was established and went public through an initial public offering on the New York Stock Exchange. The REIT underwent name changes, operating as HCP from 2007 to 2019 before rebranding to Healthpeak Properties, and changed its ticker symbol to DOC following its merger with Physicians Realty Trust. Healthpeak's investment strategy centers on two primary asset classes: life science properties and outpatient medical facilities. The company develops and owns laboratory and research space designed to support biotechnology, pharmaceutical, and life science companies conducting drug discovery and medical device development. These lab facilities feature specialized infrastructure including wet lab space and advanced HVAC systems. The outpatient medical segment encompasses physician practices, outpatient clinics, and ancillary healthcare facilities, with most properties located on or near hospital campuses. The company also maintains a portfolio of continuing care retirement communities (CCRCs) that provide senior housing options. The REIT's geographic footprint demonstrates concentration in markets where it has established scale and tenant relationships. The South San Francisco area represents the largest market exposure, followed by Boston, Dallas, San Diego, and Houston. Additional presence extends to Tampa, Philadelphia, Louisville, Nashville, Seattle, Denver, Phoenix, Atlanta, and Washington DC. This portfolio positioning reflects a strategy of clustering assets in select markets to leverage local operational expertise and tenant relationships. Healthpeak leases properties to health systems, biopharma tenants, and senior housing operators under various lease structures. The company's tenant base includes major healthcare providers and pharmaceutical companies that occupy space across multiple facilities. Healthpeak is an S&P 500 component and maintains investment-grade credit ratings.