Key Takeaways
- • Aon is acquiring insurance brokerage USI from KKR in a roughly $17 billion transaction (including debt), with a deal announcement potentially imminent as of late August 2026.
- • USI generates approximately $3 billion in annual revenue and specializes in risk management, employee benefits, and retirement consulting for midsize businesses; the acquisition positions Aon to expand its reach in this market segment.
- • KKR originally acquired USI in 2017 from Onex and has since increased its stake, becoming the largest shareholder by 2023; this sale represents part of a broader exit strategy for the private-equity firm.
- • The deal is expected to boost Aon's earnings per share as soon as 2028, according to Wall Street Journal sources; Aon has a current market capitalization of $75 billion.
- • This transaction reflects accelerating consolidation in the insurance brokerage sector and follows KKR's record asset sales activity, including exits from CoolIT and Circor's aerospace business earlier in 2026.
Summary
Aon plc is finalizing a roughly $17 billion acquisition of insurance brokerage USI Insurance Services from private-equity owner KKR, marking a significant consolidation move in the insurance sector. The Wall Street Journal reported the transaction as of late August 2026, with an announcement potentially coming within days. The deal structure includes debt financing and represents one of the largest insurance brokerage transactions in recent years.
USI, headquartered in Valhalla, New York, operates as a midsize insurance brokerage and consulting firm with approximately $3 billion in annual revenue. The company specializes in risk management, employee benefits consulting, and retirement planning services, positioning it as a strategic fit for Aon's efforts to deepen market penetration in the midmarket segment. For Aon—a large global insurance broker and consultancy with a $75 billion market capitalization—the acquisition offers a pathway to extend its service offerings and customer base while driving accretive earnings growth.
KKR's stake in USI dates to 2017, when the private-equity firm acquired the company from fellow buyout house Onex. KKR subsequently increased its ownership stake, securing the position of largest shareholder by 2023. The planned sale of USI is part of KKR's broader exit acceleration in 2026; the firm reported record asset sales of $1.29 billion during the second quarter alone, with other notable exits including the sales of data-center cooling firm CoolIT and Circor's commercial and defense aerospace division.
According to Wall Street Journal sources, the USI acquisition would provide earnings-per-share accretion to Aon beginning in 2028. Aon's recent financial performance—the company reported second-quarter adjusted earnings of $3.81 per share on July 29, exceeding analyst expectations—underscores its operational momentum heading into this major acquisition. However, Aon's stock has declined 5.6% since those earnings, closing at $355.40 on Friday prior to the deal announcement, potentially reflecting broader market dynamics or acquisition-related valuation concerns.
The transaction exemplifies accelerating consolidation within the insurance brokerage industry, as larger players consolidate midmarket competitors to achieve scale, diversification, and improved cost structures. The deal is expected to close subject to customary regulatory approvals and closing conditions.
USI, headquartered in Valhalla, New York, operates as a midsize insurance brokerage and consulting firm with approximately $3 billion in annual revenue. The company specializes in risk management, employee benefits consulting, and retirement planning services, positioning it as a strategic fit for Aon's efforts to deepen market penetration in the midmarket segment. For Aon—a large global insurance broker and consultancy with a $75 billion market capitalization—the acquisition offers a pathway to extend its service offerings and customer base while driving accretive earnings growth.
KKR's stake in USI dates to 2017, when the private-equity firm acquired the company from fellow buyout house Onex. KKR subsequently increased its ownership stake, securing the position of largest shareholder by 2023. The planned sale of USI is part of KKR's broader exit acceleration in 2026; the firm reported record asset sales of $1.29 billion during the second quarter alone, with other notable exits including the sales of data-center cooling firm CoolIT and Circor's commercial and defense aerospace division.
According to Wall Street Journal sources, the USI acquisition would provide earnings-per-share accretion to Aon beginning in 2028. Aon's recent financial performance—the company reported second-quarter adjusted earnings of $3.81 per share on July 29, exceeding analyst expectations—underscores its operational momentum heading into this major acquisition. However, Aon's stock has declined 5.6% since those earnings, closing at $355.40 on Friday prior to the deal announcement, potentially reflecting broader market dynamics or acquisition-related valuation concerns.
The transaction exemplifies accelerating consolidation within the insurance brokerage industry, as larger players consolidate midmarket competitors to achieve scale, diversification, and improved cost structures. The deal is expected to close subject to customary regulatory approvals and closing conditions.
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