High Quality Content by WIKIPEDIA articles! David Lichtenstein is the CEO of The Lightstone Group, which he founded in 1988 and is one of the largest privately held real estate companies in the United States. Lichtenstein directs all aspects of the acquisition, financing and management of a diverse portfolio of multi-family apartments, in addition to office, lodging, retail and industrial property in 24 states, the District of Columbia, Puerto Rico and Canada.