Headquartered in Mumbai, India, ICICI Bank Limited was formed in 1955 at the initiative of the World Bank, the government of India and Indian industry representatives. The company offers a wide range of banking products and financial services to corporate and retail customers.

ICICI Bank’s subsidiaries — ICICI Prudential Life Insurance Company, ICICI Lombard General Insurance Company, ICICI Prudential Asset Management Company, ICICI Securities Limited, ICICI Securities Primary Dealership Limited and ICICI Venture Funds Management Company — operate in areas of investment banking, life and non-life insurance, housing finance, venture capital, the securities broking business and asset management.

ICICI Bank has banking subsidiaries in the United Kingdom and Canada as well as branches in China, Singapore, Dubai International Finance Centre, Hong Kong, the United States, South Africa and Bahrain.

ICICI Bank operates through four segments. Retail Banking includes exposures of the company, which satisfy the four qualifying criteria of ‘regulatory retail portfolio’ as stipulated by RBI guidelines on the Basel III framework.

Wholesale Banking includes all advances to trusts, partnership firms, companies and statutory bodies, by the company which are not included in the Retail Banking segment. Treasury includes the entire investment portfolio and derivative portfolio.  Lastly, other Banking includes leasing operations and other items not attributable to any particular business segment.

ICICI Bank is one of the largest private sector banks in India, with total assets worth INR17,732.2 billion ($214.3 billion) as of Dec 31, 2023. It had a network of 6,371 branches and 17,037 automated teller machines (ATMs)/ cash recycling machines as of the same date.

The company's equity shares are listed in India on the Bombay Stock Exchange and the National Stock Exchange of India Ltd, and its American Depository Receipts (ADR) are listed on the New York Stock Exchange (NYSE).