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Being the biggest oil company in Russia, Rosneft is also the largest publicly traded company in the world based on its hydrocarbon production volume. BP holds a 19.75 % share in Rosneft which makes it a beneficiary to a broad range of existing and future projects in Russia, a country that has huge hydrocarbon resources.
The Saudi Arabian Oil Company, also known as Saudi Aramco, is the world's largest oil company. In 2014, it produced 9.5 million barrels of oil per day, more than twice the production of the next biggest producer.