Blackstone GroupArticle (+10/-10 characters)
Peter Peterson and Stephen Schwarzman founded Blackstone Group in 1985 and is headquartered in New York City. It has offices in Baltimore, Cambridge, Houston, Los Angeles, San Francisco, Wayne, London, CopenhagenCopenhagen, Dublin, Frankfurt, Luxembourg, Madrid, Milan, Paris, Hong Kong, Abu Dhabi, Beijing, Mumbai, Seoul, Shanghai, Singapore, Sydney, and Tokyo.