OCCUPATION: Abu Dhabi Investment Authority managing director
PREVIOUS APPEARANCES ON THE TIME 100: 0
PRO: Last year, the head of the world's biggest sovereign wealth fund began making headline-grabbing deals, investing money in Citigroup and Toll Brothers in the U.S. and in real estate around the world.
CON: ADIA is famously secretive; as its profile gets higher in the U.S., calls for greater transparency increase.
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