Morgan Stanley 

Investment banking, securities, wealth and investment management sit together in the official About. The firm says it works in 42 countries for companies, governments, institutions, families and individuals, and treats long staff tenure plus a shared culture as a competitive edge. Four pillars are listed: a strategy to help clients raise, manage and allocate capital; a culture of rigor, humility and partnership; financial strength; and growth through chosen investment. Headquarters New York.