Arthur Andersen LLP was an American accounting firm based in Chicago that provided auditing, tax advising, consulting and other professional services to large corporations. By 2001, it had become one of the world's largest multinational corporations and was one of the "Big Five" accounting firms. The firm collapsed by mid-2002, as details of its questionable accounting practices for energy company Enron and telecommunications company WorldCom were revealed amid the two high-profile bankruptcies. The scandals were a factor in the enactment of the Sarbanes–Oxley Act of 2002.
PricewaterhouseCoopers International Limited is a British multinational professional services brand of firms, operating as partnerships under the PwC brand. It is the second-largest professional services network in the world and is considered one of the Big Four accounting firms, along with Deloitte, EY, and KPMG.
Management consulting is the practice of providing consulting services to organizations to improve their performance or in any how to assist in achieving organizational objectives. Organizations may draw upon the services of management consultants for a number of reasons, including gaining external advice and accessing consultants' specialized expertise regarding concerns that call for additional oversight.
Deloitte Touche Tohmatsu Limited, commonly referred to as Deloitte, is a multinational professional services network. Deloitte is the largest professional services network by revenue and number of employees in the world and is considered one of the Big Four accounting firms, along with EY, KPMG, and PwC.
Capgemini Engineering is a global innovation and engineering consulting firm founded in 1982 in France by Alexis Kniazeff and Hubert Martigny.
IBM Consulting, rebranded in 2021 from IBM Global Business Services, is the professional services and consulting arm of IBM. It provides services to companies, global government organizations, non-profits and NGOs.
Kroll is a financial and risk advisory firm established in 1932 and based in New York City. In 2018, Kroll was acquired by Duff & Phelps. In 2021, Duff & Phelps decided to rebrand itself as Kroll, a process it completed in 2022.
LECG Corporation was an American consulting company based in Emeryville, California. It provided independent expert testimony on behalf of corporations, produced authoritative studies for industry, conducted economic and financial analyses on disputes and issues, and provided strategic advisory and financial advisory services to clients. In March 2011, the company was liquidated as it was unable to service its debt obligations.
Marsh & McLennan Companies, Inc., doing business as Marsh McLennan, is a global professional services firm, headquartered in New York City with businesses in insurance brokerage, risk management, reinsurance services, talent management, investment advisory, and management consulting. Its four main operating companies are Marsh, Guy Carpenter, Mercer, and Oliver Wyman.
Worley Limited is an Australian engineering management and professional services company which provides consulting and project delivery expertise to the resources and energy sectors, and complex process industries.
Houlihan Lokey, Inc., is an American multinational independent investment bank and financial services company. Houlihan Lokey was founded in 1972 and is headquartered at Constellation Place in Century City, Los Angeles, California. The firm advises large public and closely held companies as well as institutions and governments. Its main service lines include mergers and acquisitions, capital markets, restructuring and distressed M&A, fairness opinions, and financial and valuation advisory. As of March 2024, Houlihan Lokey employs more than 2,600 employees worldwide.
Mercer is an American consulting firm founded in 1945. It is one of the four operating subsidiaries of global professional services firm Marsh McLennan. Mercer is headquartered in New York City with offices in 43 countries and operations in 130 countries. The company primarily provides human resources and financial services consulting services to its clients.
Adam J. Gutstein is an American business executive. He was the president, from 2004, and CEO, from 2006, of Diamond Management & Technology Consultants (DMTC) until its takeover by PWC. Gustein joined the company in 1994 as vice president. He has been a director of the company since 1999, and has held senior positions including that of chief operating officer.
Hitachi Consulting Corporation was an American international management and technology consulting firm with headquarters in Dallas, Texas. It was founded in November 2000 as a subsidiary of the Japanese corporation Hitachi, and employed approximately 6,500 people in the US, Japan, Brazil, China, India, Portugal, Singapore, Spain, the UK, Germany, and Vietnam.
Strategy& is the strategy consulting business unit of PricewaterhouseCoopers (PwC), one of the Big Four professional service firms.
Guidehouse is an American consulting firm for businesses and government entities. It is the successor to PricewaterhouseCoopers LLP’s public sector business and it was acquired in 2018 by Veritas. The head office is in Tysons, Virginia.
Colliers International Group Inc. is a Canada-based diversified professional services and investment management company with approximately 18,000 employees in more than 400 offices in 65 countries.
Huron Consulting Group, commonly known as Huron, is a management consulting firm offering services to the healthcare, life sciences, commercial, and higher education industries.
FTI Consulting is a business consultancy firm founded in 1982 and headquartered in Washington, D.C., United States. The company specializes in corporate finance and restructuring, economic consulting, forensic and litigation consulting, strategic communications and technology. FTI Consulting employs more than 7,700 staff in 31 countries and is one of the largest financial consulting firms worldwide.
West Monroe is a digital services firm headquartered in Chicago, Illinois. West Monroe provides traditional management consulting, creative and product engineering services to businesses across many industries, including consumer and industrial products, energy and utilities, financial services, healthcare, life sciences, private equity, retail, and software and high tech. West Monroe is consistently recognized as a best place to work and a top consulting firm. West Monroe’s tagline is "Don’t Do Digital. Be Digital."
