State Bank of India (SBI) is a large, government-owned commercial bank with headquarters in Mumbai, India. As of 2013, SBI had assets of $388 billion and over 17,000 branches worldwide, making it the largest bank in India. SBI traces its origins back to 1806 with the establishment of the Bank of Calcutta. Today, SBI operates a wide range of banking services through its domestic and international branches while also owning several subsidiary financial companies.