Emerging Trends in U.S. Property & Casualty Insurance: AI's Impact
During the recent earnings season, U.S. property and casualty (P&C) insurers showcased a performance that exceeded expectations, as highlighted in a TD Cowen research note. Despite this positive outcome, market sentiment shifted due to rising concerns over the impact of artificial intelligence (AI) technology within the industry, significantly affecting investor perspectives.
The fourth quarter of 2025 saw the median earnings per share (EPS) surpass consensus by about 5%, initially prompting a 2% rise in stock values. However, shares eventually fell by approximately 2% amidst fears of AI-driven broker disintermediation. This was compounded by the widespread adoption of AI tools like Insurify's ChatGPT insurance app, which led to notable stock price declines for major brokers such as Willis Towers Watson, Aon, and Arthur J. Gallagher.
Industry analysts emphasize that this reaction may underestimate the value of comprehensive services provided by large commercial and specialty brokers. This includes not just brokerage, but also program design and claims support, which are crucial in navigating regulatory compliance and addressing complex risk management needs.
Despite AI-induced volatility, the core fundamentals of the P&C industry remain robust. The U.S. sector surpassed $1 trillion in direct premiums written (DPW) in 2024, propelled by personal lines growth. Notably, the industry combined ratio improved to about 92%, enhancing both underwriting and claims processing efficiency. However, Insurity's 2025 AI in Insurance Report indicates that only 20% of consumers support insurers’ use of AI, reflecting regulatory and consumer sentiment challenges.
Commercial lines carriers reported stronger-than-expected earnings thanks to reduced catastrophe losses and favorable reserve developments. Swiss Re's research suggests a slowdown in DPW growth due to easing rate momentum and competitive pressures. As outlined in Marsh’s Global Insurance Market Index, commercial insurance rates fell by around 4% in Q4 2025, yet property-catastrophe reinsurance pricing remains adequate.
The casualty insurance sector displayed resilience, with a 9% increase in pricing compared to the previous quarter. RenaissanceRe highlighted steady ceding commissions in casualty reinsurance, a result of ongoing primary rate hikes. Conversely, the excess and surplus (E&S) market saw a deceleration in premium growth, with Ryan Specialty reporting a notable decline in organic growth rates. Personal lines maintained strength, thanks to prior rate adjustments and minimal catastrophe impacts.
As the industry progresses into 2026, a critical focus will be balancing strong earnings with the uncertainties associated with AI adoption. The AI impact on distribution processes and the necessity of human intermediaries in navigating complex insurance requirements will remain key considerations for intermediaries and investors aiming for long-term sustainability.