Hamilton Insurance Group, Ltd.

Founded in Bermuda in 2013, Hamilton Insurance Group is a publicly listed specialty insurance and reinsurance company. It listed on the New York Stock Exchange in November 2023 and operates through three main underwriting platforms: Hamilton Global Specialty, Hamilton Select and Hamilton Re.

Hamilton writes both insurance and reinsurance through businesses in Bermuda, the United Kingdom, Ireland and the United States. Its portfolio spans property, casualty and specialty risks, including cyber, professional lines, marine, energy, political risk and treaty reinsurance.

The firm is especially focused on disciplined specialty underwriting supported by data, technology and portfolio analytics. Its 2025 business was evenly split between insurance and reinsurance, with casualty representing the largest class of business; the company reported a 92.9% combined ratio for the year.