What is Aon?
Risk, insurance brokerage, reinsurance, and human capital advisory company serving corporations, insurers, reinsurers, employers, institutions, governments, and risk buyers.
- Category
- Risk, insurance brokerage, reinsurance, and human capital advisory
- Headquarters
- Dublin, Ireland
- Founded
- 1982
- Employees
- Approximately 60,000
- Total funding
- Public company; no VC funding
- Status
- NYSE: AON; public company
What is Aon?
Aon is a public Risk, insurance brokerage, reinsurance, and human capital advisory company. Its current public-company scale signal is 2025 revenue of $17.2B across Risk Capital and Human Capital.
Aon is a public Risk, insurance brokerage, reinsurance, and human capital advisory company headquartered in Dublin, Ireland. Its current scale signal is 2025 revenue of $17.2B across Risk Capital and Human Capital, and its customer base includes corporations, insurers, reinsurers, employers, institutions, governments, and risk buyers. The company operates in regulated financial-services markets where trust, distribution, data quality, capital discipline, risk controls, and operational reliability are central to the customer promise.
The operating model is built around commissions, brokerage fees, consulting fees, reinsurance placement, human-capital advisory, data/analytics, managed services, and interest income on fiduciary funds where applicable. For sellers, the relevant buying centers are usually technology, operations, risk, finance, data, compliance, procurement, distribution, and the business unit that owns customer or asset performance. As of June 2026, this profile should be read as a public-company snapshot grounded in investor relations materials, SEC filings, official leadership and location pages, and public technology signals.
What does Aon offer?
Aon offers Commercial risk, Reinsurance, Health solutions, Wealth solutions, Talent advisory, and related services for its core customer base.
- Commercial risk· Core offering
- Reinsurance· Core offering
- Health solutions· Core offering
- Wealth solutions· Adjacent offering
- Talent advisory· Adjacent offering
- Data and analytics· Platform/service
- Captive management· Platform/service
- Retirement consulting· Platform/service
How does Aon make money?
Aon monetizes through commissions, brokerage fees, consulting fees, reinsurance placement, human-capital advisory, data/analytics, managed services, and interest income on fiduciary funds where applicable.
Aon makes money through commissions, brokerage fees, consulting fees, reinsurance placement, human-capital advisory, data/analytics, managed services, and interest income on fiduciary funds where applicable. insurance and reinsurance economics are commission-, fee-, risk-, and placement-based; consulting and analytics are project-, subscription-, retainer-, or managed-service priced. Because Aon is public, the most useful unit-economic signals are revenue mix, margin, capital intensity, credit or insurance performance, AUM or client assets, transaction activity, client retention, and expense discipline rather than a single SaaS-style price list.
Growth is driven by relationship depth, distribution reach, product breadth, risk selection, technology investment, regulatory execution, capital allocation, and customer retention. Vendor pitches should connect directly to measurable outcomes: lower operating cost, faster workflows, better risk controls, stronger data products, improved customer experience, higher advisor or banker productivity, and more resilient infrastructure.
Who leads Aon?
Aon is led by Greg Case, with finance, operations, technology, risk, and business-line executives shaping major buying decisions.
- Greg CaseChief Executive OfficerCEO since 2005Leads Aon's global Risk Capital and Human Capital strategy.
- Edmund ReeseChief Financial OfficerCFO since 2024Leads finance, capital allocation, and investor communications.
- Eric AndersenPresidentSenior executiveOversees global solution-line execution and enterprise growth.
- Lisa StevensChief Administrative OfficerSenior executiveLeads enterprise operations, people, and administrative functions.
How do you contact Aon's leadership?
Aon publishes company-level investor, media, support, or contact routes, but it does not publish personal executive emails as the default way to reach leadership. Use the public company contact listed here and treat any personal-address pattern as unverified unless the company publishes it.
investor.relations@aon.com; personal executive format not verifiedHow much funding has Aon raised?
Aon is a public company, not a venture-backed startup; its relevant capital profile is NYSE: AON public-market status.
Aon should not be evaluated through a startup funding-round lens. Its capital profile is public equity, debt or deposits where applicable, operating cash flow, dividends, repurchases, acquisitions, and regulated capital or insurance reserves. There is no current venture-funding total to enumerate; the major capital events are founding, public-market listing or independence, acquisitions, balance-sheet growth, capital return, and strategic reinvestment.
For sales planning, that is usually a capacity signal but not a blank-check signal. Aon can fund enterprise systems and strategic programs, yet procurement will expect public-company controls, security diligence, compliance review, integration clarity, and a business case tied to metrics investors and regulators already watch.
How did Aon get here?
Aon's history is defined by founding scale, public-market milestones, strategic acquisitions or expansions, and current 2025/2026 operating results.
- 1982Aon formedRyan Insurance Group and Combined International form Aon.
- 2008Benfield acquisitionAon expands reinsurance brokerage through Benfield.
- 2010Hewitt acquisitionAon expands human-capital and benefits capabilities.
- 2024NFP acquisitionAon completes the NFP acquisition, expanding middle-market reach.
- 2025$17.2B revenueAon reports 2025 total revenue of $17.2B.
- 20263x3 Plan final yearAon enters the final year of its 3x3 Plan with momentum.
Who are Aon's competitors?
Aon competes with peers that serve similar customers, own adjacent distribution, or provide substitute banking, insurance, asset-management, brokerage, advisory, risk, or financial-infrastructure workflows.
- Marsh McLennanLargest risk, insurance brokerage, reinsurance, and consulting competitor.
- WTWRisk, broking, benefits, wealth, and human-capital advisory competitor.
- Arthur J. GallagherInsurance brokerage and risk-management competitor with strong middle-market reach.
- Brown & BrownInsurance brokerage competitor focused on retail, programs, wholesale, and services.
- LocktonPrivate insurance brokerage and consulting competitor.
Aon — frequently asked questions
