Who Owns Oliver Wyman?
Oliver Wyman is a global management consulting firm owned by Marsh & McLennan Companies, Inc. (NYSE: MRSH). Founded in New York in 1984 by former Booz Allen Hamilton consultants Alex Oliver and Bill Wyman, it was acquired in 2003 and employs approximately 7,000 professionals across more than 60 offices. It will go to market as Oliver Wyman, a Marsh business, beginning in 2027.
Parent Company
Acquired
2003
Status
Publicly Traded
Headquarters
Oliver Wyman Timeline
GlobalOfficial Website
Who Owns Oliver Wyman?
- Parent Company: Marsh & McLennan Companies, Inc.
- Ownership Type: Subsidiary
- Acquisition Year: 2003
- Company Type: Publicly Traded
- Stock Ticker: NYSE: MRSH
| Brand | Parent Company | Ownership Type |
|---|---|---|
| Oliver Wyman | Marsh & McLennan Companies, Inc. | Subsidiary |
History of Oliver Wyman
- Founded: 1984
- Founders: Alexander Oliver, William Wyman
- Acquired by Marsh & McLennan Companies, Inc.: 2003
Oliver, Wyman & Company was founded in New York in 1984 when six consultants left Booz Allen Hamilton to start their own firm. Two of the founders, Alexander Oliver and William Wyman, both Booz partners, gave the firm its name. Their premise was specialization: rather than attempting to advise all industries, the firm would concentrate on financial institutions at a time when competitors pursued generalist models.
The financial services focus proved durable. Through the 1990s, Oliver Wyman & Company built a reputation for deep industry expertise in banking, insurance, and capital markets. Bill Wyman left the firm in 1995, believing the human side of consulting was losing ground to analytical work, but the firm continued to grow.
Marsh & McLennan acquired Oliver, Wyman & Company in 2003 and merged it with Mercer Management Consulting and Mercer Delta, an organizational change consultancy acquired in 2000. The combination was initially branded Mercer Oliver Wyman. In 2007, the strategy consulting businesses were unified under the Oliver Wyman name, while the human resources consulting arm continued as Mercer.
The Oliver Wyman Group that emerged includes NERA Economic Consulting, which traces to 1961 and was acquired by Marsh & McLennan in 1983, and Lippincott, the brand and design consultancy acquired in 1986. The group's history involves repeated reorganizations, a complexity noted even by consulting industry chroniclers.
Ted Moynihan serves as Managing Partner and CEO. In October 2025, the parent announced that the operating unit would be renamed Marsh Management Consulting in reporting, while the client-facing brand becomes Oliver Wyman, a Marsh business, in 2027. Notably, the parent turned to its own Lippincott unit to design the new Marsh masterbrand unveiled at Davos in January 2026.
About Marsh & McLennan Companies, Inc.
Is Marsh the same company as Marsh & McLennan?
Yes. Marsh & McLennan Companies, Inc. remains the legal name, but the company rebranded to Marsh effective January 2026. Its New York Stock Exchange ticker changed from MMC to MRSH on January 14, 2026. The four businesses, Marsh, Guy Carpenter, Mercer, and Oliver Wyman, will transition to the Marsh masterbrand by 2027.
Is Marsh publicly traded?
Yes. Marsh & McLennan Companies, Inc. trades on the New York Stock Exchange under the ticker MRSH. It is an S&P 500 component with a market capitalization above $100 billion.
When was Marsh founded?
The company was founded in 1905 in Chicago as Burroughs, Marsh & McLennan by Henry W. Marsh, Donald R. McLennan, and Daniel W. Burroughs. It was renamed Marsh & McLennan in 1906. Henry Marsh's own insurance business dated to 1871.
Who founded Marsh & McLennan?
Henry W. Marsh and Donald R. McLennan founded the firm with Daniel W. Burroughs in 1905. Marsh and McLennan pioneered the concept of the broker acting as a buyer of insurance on behalf of the client rather than a seller for the insurance company.
What is Marsh's market position?
Marsh is the world's largest insurance broker by revenue, generating $27.0 billion in 2025. It outranks Aon, Arthur J. Gallagher, and Willis Towers Watson. Its Guy Carpenter unit is a leading reinsurance broker, and Oliver Wyman is a major management consultancy.
What happened to Marsh McLennan Agency?
Marsh McLennan Agency continues to operate as the company's middle-market insurance agency business in North America. It acquired McGriff Insurance Services for $7.75 billion in November 2024, significantly expanding its scale in commercial property and casualty, employee benefits, and personal lines.
Has Marsh faced any controversies?
The most significant was the 2004 bid-rigging investigation by the New York Attorney General, which resulted in an $850 million settlement, the end of contingent commissions, and a change of CEO. The current Thrive restructuring program has also drawn scrutiny for associated workforce reductions.
- Founded: 1905
- Headquarters: New York City, New York, USA
- Company Type: Publicly Traded
- Stock: NYSE: MRSH
- Revenue: $27.0 billion (FY2025)
- Employees: Approximately 95,000
Where Is Oliver Wyman Made / Based?
- Headquarters: New York City, New York, USA
Oliver Wyman Categories & Tags
Awards & Recognition
Oliver Wyman consistently places in the top tier of the Vault Consulting Rankings and is regularly recognized for excellence in financial services consulting. The firm's Oliver Wyman Forum research platform produces studies on global economic and social topics that receive wide citation. Lippincott, within the group, is one of the most awarded brand consultancies in the industry, responsible for the new Marsh masterbrand identity among many corporate rebrands.
Brands Owned by Marsh & McLennan Companies, Inc.
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InsuranceMarsh McLennan Agency
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insurance-agencymiddle-marketemployee-benefits
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hr-consultingemployee-benefitsinvestment-consulting
Oliver Wyman Ownership: Pros & Cons
Advantages
- +Deep financial services specialization creates durable client relationships
- +Marsh parent provides insurance industry access and deal flow
- +NERA and Lippincott add economic and brand consulting breadth
- +$3.6 billion revenue scale supports global delivery capability
- +Retains its own name in the 2027 masterbrand transition
Considerations
- -Long history of mergers and reorganizations creates structural complexity
- -Competes against larger Big Three firms for top talent and mandates
- -Consulting demand is cyclical and sensitive to client cost cutting
- -Marsh masterbrand may create client confusion during transition
- -Founder-era financial services focus limits diversification in some markets
Frequently Asked Questions About Oliver Wyman
Sources & Further Reading
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No direct competitors found in the same category. This could be because Oliver Wymanoperates in a unique market segment or we're still building our competitor database.
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Marsh & McLennan Companies, Inc. Stock Information
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