Stock Markets August 31, 2026 08:18 AM

Aon to Buy USI for About $17 Billion; Shares Slip in Premarket Trading

Deal expands Aon's footprint in midsize business brokerage while KKR continues asset exits

By Maya Rios
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AON KKR

Aon said it will acquire USI Insurance Services from private-equity firm KKR for roughly $17 billion including debt, a move that weighed on Aon shares in Monday premarket trading. USI generates about $3 billion in annual revenue and was previously bought by KKR and partners in 2017 for $4.3 billion. Aon said the purchase should bolster its service offering for midsize companies and is expected to lift earnings per share by 2028.

Aon to Buy USI for About $17 Billion; Shares Slip in Premarket Trading
AON KKR
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Key Points

  • Aon agreed to buy USI Insurance Services from KKR for approximately $17 billion, including debt.
  • USI generates roughly $3 billion in annual revenue and was acquired by KKR and partners from Onex in 2017 for $4.3 billion.
  • The acquisition is expected to broaden Aon's midsize business offerings and to boost earnings per share by 2028; Aon shares fell 1.8% in Monday premarket trading.

Aon (AON) shares fell 1.8% in Monday premarket trading after the insurance broker disclosed an agreement to acquire USI Insurance Services from KKR (KKR) for about $17 billion, a figure that includes the target's outstanding debt.

The companies confirmed the transaction on Monday. The announcement followed a Wall Street Journal report on Sunday that said the deal was imminent.

USI, headquartered in Valhalla, New York, operates as an insurance brokerage and consulting business that places policies and helps design employee benefit programs for companies and individuals. The firm reports roughly $3 billion in annual revenue, per information on its website.

KKR originally purchased USI from private-equity firm Onex in 2017, in a transaction that also involved Canadian investment manager CDPQ, for $4.3 billion. Since that acquisition KKR has made further investments to increase its stake and has become the largest shareholder in USI.

Aon describes itself as a provider of risk management, health benefits and retirement wealth services. The company said purchasing USI will broaden its capabilities in serving midsize businesses and that the transaction is expected to be accretive to earnings per share by 2028.

The deal is the latest example of KKR divesting assets as the private-equity industry addresses a backlog of holdings. In the most recent reporting period KKR recorded $1.29 billion in asset sales, its highest quarterly total to date.


Market and sector implications

  • Insurance and benefits brokerage sector - Aon expands scale in the midsize business segment through the acquisition of USI.
  • Private equity and asset management - KKR continues to exit portfolio holdings as part of broader asset-sale activity.
  • Financial markets - Aon shares moved lower in premarket trade on the news of the transaction.

Deal specifics

  • Acquiror: Aon.
  • Target: USI Insurance Services, based in Valhalla, N.Y.
  • Seller: KKR, which increased its ownership since acquiring USI with partners in 2017.
  • Price: Approximately $17 billion including debt.
  • USI annual revenue: Roughly $3 billion.
  • Prior 2017 purchase price: $4.3 billion, paid by KKR and CDPQ from Onex.
  • KKR recent asset sales: $1.29 billion in the latest period.

Context and expectations

Aon said the acquisition will strengthen its ability to serve midsize customers and that it expects the transaction to contribute to higher earnings per share by 2028. The announcement comes as KKR continues to pare holdings from a backlog of portfolio assets, reporting a record quarterly figure for asset sales in the most recent period.

Risks

  • The purchase price includes outstanding debt - this has implications for Aon's balance sheet and leverage, as noted by the inclusion of debt in the approximately $17 billion figure.
  • Market reaction to the announcement was negative for Aon in premarket trading, indicating investor uncertainty about the transaction.
  • KKR is amidst a period of portfolio exits and asset sales, reflecting an ongoing private-equity process to reduce a backlog of holdings which may affect timing and disposal dynamics.

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