Aon Nears $17 Billion Acquisition of USI Insurance Services to Expand Mid-Market Footprint

USI is based in Valhalla, New York, and was acquired in 2017 by private-equity firm KKR alongside CDPQ for $4.3 billion, with KKR later increasing its stake to become USI’s largest shareholder.
The deal could be announced as soon as Monday per WSJ, and would rank among the largest recent insurance-brokerage transactions.
Analysts are broadly positive: 14 buy, 9 hold, and 2 overweight recommendations, with an average price target around $406.21—roughly 14% above the prior close.
The deal would follow Aon’s ongoing consolidation in the sector, joining prior scale moves such as the middle-market broker NFP acquisition, which had an enterprise value of about $13.4 billion.
GuruFocus notes Aon's stock is currently viewed as undervalued relative to its GF Value, with a GF Value suggesting an intrinsic value about 9.5% higher and a GF Score of 96.
Aon is close to acquiring USI Insurance Services from private-equity owner KKR in a deal valued at roughly $17 billion including debt, according to Wall Street Journal. The move would significantly expand Aon's footprint in the mid-market commercial insurance brokerage space. An announcement could come as soon as Monday, though financing and regulatory approvals still need to be finalized.
USI generates about $3 billion in annual revenue and was bought by KKR and CDPQ in 2017 for $4.3 billion. The new deal values USI at roughly 5.7 times its projected revenue, marking another major consolidation move in the fragmented insurance brokerage industry. Analysts are broadly positive on the transaction's potential to boost Aon's earnings and growth.
The insurance brokerage industry remains highly fragmented, with thousands of smaller firms competing for market share. Aon's acquisition strategy targets mid-market players like USI to consolidate the sector and strengthen its commercial risk capabilities. This deal follows Aon's prior acquisition of NFP, an enterprise valued at about $13.4 billion, showing the company's aggressive expansion in this space.
The $17 billion price tag includes debt and values USI at 5.7 times its projected revenue—a reasonable multiple for a growing broker in the sector. USI, based in Valhalla, New York, brought in about $3 billion in annual revenue before the deal. KKR, which increased its stake after the initial 2017 investment, will be the primary seller in this transaction.
Analyst consensus remains decidedly bullish. Aon holds 14 buy ratings, 9 hold ratings, and 2 overweight ratings from tracked analysts, with an average price target around $406.21—roughly 14% above the prior close. GuruFocus notes that Aon's stock is currently undervalued relative to its intrinsic value, with the company's GF Score of 96 suggesting strong fundamentals and execution.
While the deal framework is nearly complete, financing and regulatory clearance remain outstanding. Given the size of the transaction and Aon's existing market position, antitrust scrutiny is likely. If approved, the deal would rank among the largest recent insurance-brokerage transactions and cement Aon's position as a leading consolidator in the space.
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