Insurance Brokerage M&A Activity Surges Past Last Year’s Pace

Insurance brokerage merger and acquisition activity gained momentum through May 2025, representing a 5.4% increase in the first five months of the year over the same period a year earlier, according to MarshBerry.
“It is expected that this year will continue to see monthly fluctuations in deal volumes, perhaps mimicking the continuously changing macroeconomic environment. However, underlying factors point to a continued, albeit more measured, level of activity in 2025,” stated Phil Trem, President, Financial Advisory. “Stabilizing inflation, a more favorable debt market for buyers, and ongoing investor interest in the resilient insurance sector are expected to provide tailwinds.”
The insurance brokerage M&A market demonstrated resilience in May with 59 announced transactions, rebounding strongly from April’s slower performance, according to MarshBerry. This monthly surge pushed year-to-date activity to 255 deals as of May 31, compared to 242 transactions recorded through May 2024, establishing a positive trajectory for the remainder of the year.
Private capital-backed buyers continue to drive market activity, accounting for 174 of the 255 total deals, representing 68% of all transactions, the report noted. Independent agencies maintained their position as the second-largest buyer category with 48 deals, capturing 18.8% of market share, while bank buyers participated in just four transactions during the first five months of 2025.
The market concentration among leading acquirers remains pronounced, with the top 10 buyers accounting for 46% of all announced transactions, according to the report. The three most active buyers—Broad Street Partners, Hub International, and World Insurance Associates—alone represent 23.5% of total deal activity, demonstrating the continued consolidation trend among major brokers.
Market Dynamics Create Mixed Challenges and Opportunities
Notable transactions during the period illustrate the diverse strategic approaches driving current market activity, according to MarshBerry.
Aquiline Capital Partners’ acquisition of Intercare, a California-based third-party administrator specializing in workers’ compensation and liability claims, represents private investment firms’ continued expansion into specialized TPA services. Founded in 1994, Intercare’s integrated approach combining litigation and medical management attracted Aquiline’s investment as the firm seeks accelerated growth and expanded service capabilities.
Hub International’s acquisition of Fenner & Esler Agency demonstrates the value of established market presence and specialized expertise. The New Jersey-based brokerage, founded in 1923, brings nearly a century of experience in professional liability and risk management services for architects, engineers, surveyors, and environmental professionals.
The market’s most significant development came with Brown & Brown’s announcement of a definitive agreement to acquire RSC Topco, the parent company of Accession Risk Management Group, for $9.825 billion on a cash and debt-free basis. Expected to close in the third quarter of 2025, this transaction represents one of the largest insurance brokerage acquisitions in recent years.
The Accession acquisition includes both Risk Strategies and One80 Intermediaries, two major players in specialty brokerage and wholesale insurance markets. With approximately $1.7 billion in 2024 pro forma adjusted revenue and more than 5,000 professionals across the United States and Canada, Accession ranks among the largest privately held insurance brokerages in the country, according to the report.
View the full report here. &