16) Stephen Schwarzman – Net Worth: $10.8 Billion

This 67 year old billionaire is the chairman and CEO of Blackstone Group, a premier global investment and advisory firm.

15) Richard Kinder – Net Worth: $11.2 Billion

This 69 year old self made billionaire is the co-founder, chairman and CEO of Kinder Morgan Energy Partners, an energy and pipeline corporation.

14) Rupert Murdoch – Net Worth: $14.6 Billion

This 83 year old self made billionaire is the chairman and CEO of News Corp.

13) Lakshmi Mittal – Net Worth: $15.9 Billion

This 64 year old London based steel tycoon is the chairman and CEO of ArcelorMittal, which is the world’s biggest steelmaker. Mittal took a pay cut last year due to the company’s financial situation. The company recently acquired a steel plant in Alabama from ThyssenKrupp, along with Japan’s Nippon Steel & Sumitomo Metal.