Arthur Andersen, based in Chicago, is an accounting firm providing services in assurance, taxation, corporate finance, and more. It is considered ans one of the “Big Five” accounting firms among PricewaterhouseCoopers, Deloitte Touche Tohmatsu, Ernst & Young, and KPMG. The former consultancy and outsourcing arm of the firm, now known as Accenture, which had separated from the accountancy side in 1987 and renamed themselves after splitting from Andersen Worldwide in 2000, continues to operate and has become one of the largest multinational corporations in the world. Arthur Andersen works within the industries such as energy and utilities, financial services, government, pharmaceuticals, biomedical and health services, products, real estate, hospitality, technology, media, and communications. It was founded in 1913 by Arthur Andersen and Clarence DeLany as Andersen, DeLany & Co.