State-run Indian Oil Corporation (IOC) has emerged as the country’s biggest company in terms of annual revenue as per an annual list of 2015 Fortune 500 companies in India. IOC topped the list for consecutive sixth year with annual revenue of ₹ 4,51,911 crore. IOC was followed by Mukesh Ambani-led private sector Reliance Industries at the second place with a revenue of ₹ 3,82,565 crore Indian Oil Corporation topped the inaugural Fortune India 500 rankings, and Reliance Industries was listed second. The next three places were taken by State Bank of India, Bharat Petroleum and Hindustan Petroleum respectively.