Hardt is a former managing director at Blackstone’s real estate platform in Germany. : Andreas Hardt, a former managing director at Blackstone’s real estate platform in Germany, has joined the real estate arm of the Ontario Municipal Employees Retirement System (OMERS). Oxford Properties has appointed Hardt as managing director of its German office to help grow the company’s German portfolio. Last October, Oxford Properties entered into the Berlin market as it joined forces with New York-headquartered Madison International Realty to buy the Sony Center in Berlin for around €1.1bn from Korea’s National Pension Service (NPS).