Stephen Schwarzman is an American businessman and investor, best known as the co-founder and CEO of Blackstone Group, one of the world's largest private equity firms. Born on April 14, 1947, in Philadelphia, Pennsylvania, he graduated from Princeton University and earned an MBA from Harvard Business School. Under his leadership, Blackstone has expanded its investment portfolio to include real estate, credit, and hedge funds, significantly influencing the global financial landscape. Schwarzman is also known for his philanthropic efforts, particularly in education and the arts, contributing to various institutions and initiatives.