Compare · AON vs MMC
AON vs MMC
Side-by-side comparison of Aon plc (AON) and Marsh & McLennan Companies Inc. (MMC): market cap, price performance, sector, and recent activity on the wire.
Summary
- Both AON and MMC operate in Specialty Insurers (Finance), so they compete in similar markets.
- MMC is the larger of the two at $75.87B, about 1.1x AON ($70.17B).
- Over the past year, AON is down 7.2% and MMC is down 18.0% - AON leads by 10.8 points.
- AON has hit the wire 4 times in the past 4 weeks while MMC has been quiet.
- Both have 25 recent analyst ratings on file.
Aon plc
Aon plc, a professional services firm, provides advice and solutions to clients focused on risk, retirement, and health worldwide. It offers commercial risk solutions, including retail brokerage, cyber, and global risk consulting solutions, as well as acts as a captive insurance solutions provider; and health solutions, such as health and benefits brokerages, and health care exchanges. The company also provides treaty and facultative reinsurance, as well as insurance-linked securities, capital raising, strategic advice, restructuring, and mergers and acquisitions services; and corporate finance advisory services and capital markets solutions products. In addition, it offers strategic design consulting services on their retirement programs, actuarial services, and risk management services; advice services on developing and maintaining investment programs across a range of plan types, including defined benefit plans, defined contribution plans, endowments, and foundations for public and private companies, and other institutions; and advice and solutions that help clients in accelerating business outcomes by enhancing the performance of their people, including assessment and optimized deployment, as well as the design, alignment, and benchmarking of compensation to business strategy and performance outcomes. Further, the company develops, markets, and administers customized insurance programs and specialty market solutions for organizations, and their members or affiliates; operates the Global Risk Insight Platform, which provides data, analytics, engagement, and consulting services; offers CoverWallet, a digital insurance platform for small- and medium-sized businesses; and provides ReView that provides advisory, analysis, and benchmarking services to help reinsurers. Aon plc was founded in 1919 and is headquartered in Dublin, Ireland.
Marsh & McLennan Companies Inc.
Marsh & McLennan Companies, Inc., a professional services company, provides advice and solutions to clients in the areas of risk, strategy, and people worldwide. It operates in two segments, Risk and Insurance Services, and Consulting. The Risk and Insurance Services segment offers risk management services, such as risk advice, risk transfer, and risk control and mitigation solutions, as well as insurance and reinsurance broking, catastrophe and financial modeling, and related advisory services; and insurance program management services. This segment serves businesses, public entities, insurance companies, associations, professional services organizations, and private clients. The Consulting segment provides health, wealth, and career consulting services and products; and specialized management, as well as economic and brand consulting services. Marsh & McLennan Companies, Inc. has collaboration with Chubb Limited to secure insurance coverage for the COVAX no-fault compensation program. The company was founded in 1871 and is headquartered in New York, New York.
Latest AON
- Aon Clients Recover More Than $3B in Transaction Liability Insurance Globally as Claims Activity Continues to Evolve
- Aon to Speak at the Morgan Stanley U.S. Financials Conference
- Aon Announces Regional Leadership Appointments to Advance Aon United Strategy
- Aon to modernize how brokers access capital and syndicate risk with new Digital Placement Exchange (Aon DPX) trading platform
- Director Notebaert Richard C gifted 1,438 units of Class A Ordinary Stock, decreasing direct ownership by 5% to 27,738 units (SEC Form 4)
- Aon Expands Aon Claims Copilot Globally, Strengthening Data and Analytics Capabilities Across Commercial Risk
- SEC Form 10-Q filed by Aon plc
- Aon Reports First-Quarter 2026 Results
- SEC Form DEFA14A filed by Aon plc
- SEC Form DEF 14A filed by Aon plc
Latest MMC
- Marsh & McLennan Companies Inc. filed SEC Form 8-K: Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits
- Marsh McLennan to Change Its NYSE Symbol to "MRSH" on January 14; Hosts Fourth Quarter Earnings Investor Call on January 29
- Mercer Reveals Average Salary in Thailand Set to Increase by 5.2% in 2026
- Mercer China Unveils the Recipients of Its 2025 Star Employers Awards
- Marsh McLennan appoints Mike Mathews Digital Infrastructure Leader
- Mizuho initiated coverage on Marsh McLennan
- Marsh McLennan's Mercer to Invest in a Bespoke Long-Term Asset Fund for Private Markets With an Initial Commitment of £350 Million
- KBW Announces Index Rebalancing for Fourth-Quarter 2025
- Rising Third-Party Risks and Persistent Ransomware Threats Drive Increased Cybersecurity Investments in 2026: Marsh Report
- Most US Employers Plan to Keep 2026 Salary Increases Flat to 2025, According to Mercer