Digital Realty Trust, Inc. is a real estate investment trust that invests in carrier-neutral data centers and provides colocation and peering services.
As of December 31, 2016, the company owned 132 operating data center facilities totaling 26.1 million rentable square feet, of which 104 were in the United States and 32 were in Europe. The properties are concentrated in New York State, Northern Virginia, London, United Kingdom, Dallas, Silicon Valley, and Chicago.
The company is a member of The Green Grid and has helped pioneer concepts of energy efficient and energy conserving data center design.
The company was formed in 2004 by GI Partners, which contributed 21 data centers that it acquired through bankruptcy auctions and from distressed companies at a 20–40% discount to replacement cost.
On November 4, 2004, the company became a public company via an initial public offering. At that time, the company owned 23 properties comprising 5.6 million square feet.
In August 2006, the company sold a building in Denver, Colorado to TIAA-CREF for $60.42 million. The company also acquired a property in Phoenix, Arizona for $175 million.
By March 2007, GI Partners had sold all of its shares in the company.
In January 2010, the company acquired 3 data centers in Massachusetts and Connecticut for $375 million.
In January 2012, the company acquired a 334,000 square foot data center near Hartsfield-Jackson Atlanta International Airport for $63 million in a leaseback transaction. The company also acquired a data center in San Francisco for $85 million.
In April 2013, the company acquired the data center of Delta Airlines in Eagan, Minnesota for $37 million in a leaseback transaction.
In July 2013, the company doubled capacity at its data center in Chandler, Arizona.
In May 2015, the company sold a building in Philadelphia for $161 million that it acquired in 2005 for $59 million.
In October 2015, the company acquired Telx for $1.886 billion.
In November 2015, the company acquired 125.9 acres of undeveloped land in Loudoun County, Virginia for $43 million and announced plans to build a 2 million square foot data center on the property.
In July 2016, the company acquired 8 data centers in Europe from Equinix for $874 million.
In March 2017, the company announced a $22 million expansion of its data center in Atlanta.
In 2017, the Supreme Court will hear a whistleblower case in which the company fired an employee who had complained internally about the elimination of supervisory controls and the hiding of cost over-runs. After he was fired, the employee sued the company, saying he was protected by whistleblower provisions in Dodd-Frank.
In September 2017, the company completed the acquisition of DuPont Fabros Technology.