Net profits at his ArcelorMittal, world’s largest steel-maker, are up 18-fold to $2.9 billion in 2010 due to recovery in steel demand and higher margins. Group spun off its stainless steel unit into Aperam, a new listed company, and also acquired Canadian miner Baffinland Iron Mines Corporation. It has funded a 377-foot sculpture called ArcelorMittal Orbit in London’s Olympic Park for the 2012 Olympics. Europe’s richest resident, he bought Alderbrook Park, a 340-acre country estate outside London, where he plans to build an eco-friendly country mansion for a reported $40 million. Daughter Vanisha acquired stake in Roc Capital Management, a New York hedge fund. Daughter-in-law Megha owns German fashion house Escada.
Net Worth: $31.1 billion