#27 Sheikh Ahmed bin Zayed al Nahyan

The World's Most Powerful People

#27 Sheikh Ahmed bin Zayed al Nahyan

Managing Director
Abu Dhabi Investment Authority
U.A.E.
Age: 41

Elusive managing director runs world's largest sovereign wealth fund. But with disastrous bets in failing U.S. banks—including a $7.5 billion injection in Citigroup—fund may have lost top-dog status to Norway's $445 billion Government Pension Fund.