50. Jose Sergio Gabrielli de Azevedo
50. Jose Sergio Gabrielli de Azevedo
CEO, Petrobras

Gabrielli leads an experienced management team that doubled Petrobras's reserves with last year's massive discoveries in "presalt" formations off the Brazilian coast. If these discoveries pan out as expected, the Brazilian state oil company could double its reserves and production volume over the next decade. Gabrielli and his team achieved solid results over the past year, increasing sales by 13% and profits by 30%. However, Brazilian government authorities ultimately call the shots at Petrobras, not Gabrielli. And there's evidence that the government doesn't always run Petrobras for the benefit of its shareholders. Some investors believe that the government manipulated a 2009 share offering to boost its own stake by diluting minority shareholders.

--Reporter associates: Cappy Lyons and Marilyn Adamo


This article is from the December 12, 2011 issue of Fortune.
By Richard McGill Murphy, contributor @FortuneMagazine - Last updated November 17 2011: 5:58 PM ET
Join the Conversation
Howard Schultz: Businessperson of the Year

He rescued the coffee chain. It had record financial results this year. Now the CEO is on a campaign to save the country from its politicians. Here's how he blends capitalism and activism.

Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer LIBOR Warning: Neither BBA Enterprises Limited, nor the BBA LIBOR Contributor Banks, nor Reuters, can be held liable for any irregularity or inaccuracy of BBA LIBOR. Disclaimer. Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.