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Aon

AON

Market cap $62.7B

295.64 USD

-0.41

0.14%

At close Updated Sep 18, 4:00 PM EDT

Pre-market

After hours

295.64

0.00

0%

1 day

-0.14%

5 days

-4.04%

1 month

-13.86%

3 months

-6.96%

6 months

-7%

Year to date

-14.13%

1 year

-16.19%

5 years

2.65%

10 years

168.81%

About: Aon is a leading global provider of insurance and reinsurance brokerage and human resources solutions. Its operations are tilted toward its brokerage operations. Headquartered in London, Aon has about 60,000 employees and operations in over 120 countries.

Employees: 60,000

Financials Insurance Brokers

News

Positive

Neutral

Negative

Sentiment 3-Months

Positive 46.3%

Neutral 44.4%

Negative 9.3%

The Motley Fool

Aon Chairman Lester Knight Buys 20,000 Shares for $6.5 Million. What Does This Mean for Investors?

The purchase involved 20,000 shares for a total value of ~$6.5 million based on execution prices as of September 2, 2026. The transaction size represents 7% of the total equity stake held by the director prior to this filing.

Aon Chairman Lester Knight Buys 20,000 Shares for $6.5 Million. What Does This Mean for Investors?

Zacks Investment Research

AON's USI Deal Drives $13.5B Bond Offering, Draws $65B in Orders

Aon's $13.5B bond sale for its $17B USI acquisition draws about $65B in orders, tightening pricing despite higher borrowing costs and a difficult market.

AON's USI Deal Drives $13.5B Bond Offering, Draws $65B in Orders

Aon plc (AON) Presents at KBW Insurance Conference 2026 Transcript

Aon plc (AON) Presents at KBW Insurance Conference 2026 Transcript

Aon plc (AON) Presents at KBW Insurance Conference 2026 Transcript

Aon to Speak at the KBW Insurance Conference

DUBLIN, Sept. 3, 2026 /PRNewswire/ -- Greg Case, Chief Executive Officer of Aon plc (NYSE: AON), a leading global professional services firm, will speak at the KBW Insurance Conference in New York on Thursday, September 10, in a session that begins at 1:35 PM ET.

Aon to Speak at the KBW Insurance Conference

Zacks Investment Research

How Can Healthcare Inflation Fuel Growth for MRSH, UNH & CNC?

Rising employer healthcare costs could boost Marsh's consulting demand and create growth avenues for UnitedHealth and Centene through cost-control solutions.

How Can Healthcare Inflation Fuel Growth for MRSH, UNH & CNC?

Zacks Investment Research

3 Insurance Brokerage Stocks Find New Growth Drivers as Rates Fade

Organic growth for brokerage stocks like WTW, AJG and AON remains resilient as softer insurance pricing shifts the focus to underlying business activity.

3 Insurance Brokerage Stocks Find New Growth Drivers as Rates Fade

Zacks Investment Research

Aon's $17 Billion USI Deal: A Costly Bet on Middle-Market Growth

Aon's $17B USI acquisition expands its middle-market reach and specialty capabilities, but adds debt and puts execution under pressure.

Aon's $17 Billion USI Deal: A Costly Bet on Middle-Market Growth

Aon plc (AON) M&A Call Transcript

Aon plc (AON) M&A Call Transcript

Aon plc (AON) M&A Call Transcript

Aon's $17B USI Deal Targets Middle-Market Insurance Dominance

AON NYSE: AON said it has entered a definitive agreement to acquire U.S. middle-market insurance broker USI in an all-cash transaction valued at approximately $17 billion, or $16.7 billion net of certain tax attributes. The company expects the deal to close in the fourth quarter of 2026, subject to regulatory approvals and customary closing conditions.

Aon's $17B USI Deal Targets Middle-Market Insurance Dominance

Proactive Investors

Aon expands mid-market reach with $17 billion USI deal

Aon PLC (NYSE:AON) has agreed to acquire insurance brokerage USI from KKR for $17 billion including debt, the companies said Monday, as Aon expands its reach among medium-sized businesses. USI provides risk management, health insurance and retirement plan services for businesses and individuals, and reports about $3 billion in annual revenue.

Aon expands mid-market reach with $17 billion USI deal

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