High Quality Content by WIKIPEDIA articles! Morgan Stanley is a global financial services firm headquartered in New York City serving a diversified group of corporations, governments, financial institutions, and individuals. Morgan Stanley also operates in 36 countries around the world, with over 600 offices and a workforce of over 60,000. The company reports US$779 billion as assets under its management. It is headquartered in the Morgan Stanley Building, in Midtown Manhattan, New York City.