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Female power: Biggest companies run by women

CEO: Patricia WoertzCompany value:  $18.011 billionPatricia Woertz has been CEO and president of Archer Daniels Midland since 2006. A year later, she also became chairman of the board of  ADM, the processor and producer of food ingredients, feed ingredients and biofuels. Woertz also serves on the boards of Procter & Gamble, the US China Business Council and President’s Export Council.

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9. Archer Daniels Midland

CEO: Patricia Woertz
Company value: $28 billion

Patricia Woertz has been CEO and president of Archer Daniels Midland since 2006. A year later, she also became chairman of the board of ADM, the processor and producer of food ingredients, feed ingredients and biofuels. Woertz also serves on the boards of Procter & Gamble, the U.S. China Business Council and the President's Export Council.

adm.comInset: Andrew Harrer | Bloomberg | Getty Images