US P&C Insurance Posts $34.9B Underwriting Gain Amid Stable Catastrophe Losses

The U.S. property & casualty (P&C) insurance industry reported a significant underwriting gain of $34.9 billion for the first nine months of 2025, a marked improvement from $3.7 billion in the same period the previous year. This growth was supported by a 7% rise in net premiums earned and lower-than-expected catastrophe losses, which helped stabilize underwriting margins. Despite premium growth, incurred losses and loss adjustment expenses remained roughly consistent with the prior year, highlighting improved loss control and risk management within the sector. The industry's combined ratio improved to 94.0 during this period, reflecting a healthier underwriting performance. Catastrophe losses contributed 8.0 points to the combined ratio, down from 8.7 points in the prior year, indicating a reduction in catastrophe-related volatility. Excluding $18 billion in favorable reserve developments, the accident-year combined ratio stood at 96.5, signifying profitable underwriting results on an underlying basis. Investment income also contributed positively, with a 5.9% increase in earned net investment income complementing underwriting gains. This led to a 51.9% rise in pretax operating income, which reached $102.4 billion. However, net realized capital gains declined sharply by 80%, largely due to a $60.5 billion reduction at Berkshire Hathaway companies, which weighed on overall net income. Consequently, industry net income decreased by 23.3% to $100.9 billion for the nine months ending 2025. Line-of-business results were influenced by catastrophe experience, with improved homeowners’ insurance performance in Q2 helping to offset earlier significant fire losses in Los Angeles. Policyholder surplus increased by 6.8% to $1.2 trillion, supported by net income, unrealized gains, and contributed capital. These gains were partly offset by surplus losses and stockholder dividends, reflecting ongoing capital management strategies within the P&C insurance space. These trends align with broader projections from the Insurance Information Institute and Milliman for the U.S. P&C sector to outpace overall economic growth in 2025. The P&C industry's ability to manage catastrophe exposure, reserve development, and investment income contributed to stronger core operating results despite capital market headwinds. This performance underscores the sector's resilience and adaptability amidst fluctuating risk dynamics and financial market conditions.