Aon plc (AON)
Financials2 articles
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Why is AON moving?
BullishAug 31Aon (AON) announced that it will acquire USI Insurance Services in a deal valued at $17 billion, sourced from private equity firm KKR. This acquisition aims to strengthen Aon's market presence in the U.S. middle-market insurance segment, which exceeds $40 billion. Aon's CEO emphasized that USI will enhance their footprint in the excess & surplus insurance area. The transaction is expected to close in the fourth quarter of 2026 and is anticipated to boost Aon's adjusted profit by 2028, funded through debt.
Read the full story →Aon plc (AON) overview
Aon is a global insurance brokerage and risk-advisory firm. It is a member of the S&P 500 and is classified in the Financials sector — banks, insurers and capital-markets firms at the center of the economy.
Aon plc trades on the NYSE under the ticker symbol AON. As of the most recent market data, the stock was priced around $321.52, down 9.53% on the session, giving Aon plc a market capitalization of roughly $68.20B.
Over the past 52 weeks, AON has traded between $304.59 and $382.34. Shares are valued at a trailing price-to-earnings (P/E) ratio of about 19.6, a common gauge of how richly the market prices the company's earnings. Aon plc also pays a dividend, currently yielding around 92.00%.
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Why investors watch AON
As one of the larger companies in the Financials sector, Aon plc is closely followed by investors and often moves with broader trends across banks, insurers and capital-markets firms at the center of the economy. Traders watch AON for earnings reports, analyst rating changes, and headlines that can shift sentiment — each of which is summarized on this page as it breaks.
Market Mood
Latest AON news

Aon (AON) to Acquire USI Insurance Services for $17 Billion
Aon (AON) announced that it will acquire USI Insurance Services in a deal valued at $17 billion, sourced from private equity firm KKR. This acquisition aims to strengthen Aon's market presence in the U.S. middle-market insurance segment, which exceeds $40 billion. Aon's CEO emphasized that USI will enhance their footprint in the excess & surplus insurance area. The transaction is expected to close in the fourth quarter of 2026 and is anticipated to boost Aon's adjusted profit by 2028, funded through debt.
Read More: Aon (AON) to Acquire USI Insurance Services for $17 Billion
Aon (AON) nears $17 billion deal to acquire USI from KKR
Aon (AON) is approaching a deal valued at around $17 billion, including debt, to purchase USI from KKR. The acquisition could be announced as soon as Monday, according to The Wall Street Journal. USI has approximately $3 billion in annual revenue and specializes in risk management and consulting. This deal could enhance Aon’s market reach and increase its earnings per share by 2028, making it significant for investors considering Aon’s growth strategy amidst a recent 5.6% drop in its stock price to $355.40.
Read More: Aon (AON) nears $17 billion deal to acquire USI from KKRMore Financials stocks
Frequently asked questions
Is Aon plc in the S&P 500?
Yes. Aon plc (AON) is a member of the S&P 500 index, classified in the Financials sector.
What sector is AON in?
Aon plc is classified in the Financials sector of the S&P 500 — banks, insurers and capital-markets firms at the center of the economy.
Where can I find the latest AON news?
This page collects recent Aon plc (AON) news and market analysis, each article summarized by AI and tagged with bullish, bearish, or neutral sentiment.
What is Aon plc's stock price?
As of the most recent market data, Aon plc (AON) traded at approximately $321.52. Prices move throughout the trading day, so this reflects the latest available quote rather than a live price.
What is Aon plc's market cap?
Aon plc has a market capitalization of roughly $68.20B, based on its most recent share price and shares outstanding.
What is AON's P/E ratio?
AON trades at a trailing price-to-earnings ratio of about 19.6. The P/E ratio compares a company's share price to its earnings per share.