Digital Realty Trust, Inc. owns properties that are leased to firms in the technology sector. Its portfolio includes more than 90 properties in the US, Europe, and Asia, including data communications hubs, electronic storage and processing centers, tech manufacturing facilities, and offices of tech companies. All told, the REIT owns more than 16 million sq. ft. of rentable space, including space held for redevelopment. Digital Realty Trust focuses on properties in hot tech markets such as Chicago, Dallas, Phoenix, New Jersey, New York, northern Virginia, and California's San Francisco Bay area and Silicon Valley (its largest market).