W. R. Berkley is a U.S. specialty commercial insurer based in Greenwich, Connecticut and listed on the NYSE under WRB. It reported FY2025 total revenues of $14.71B.
W. R. Berkley collects premiums for commercial insurance and reinsurance, pays claims over time, and invests the money it holds in the meantime. The Insurance segment writes other liability, short-tail lines (such as commercial multi-peril property, inland marine, accident and health, surety and high net worth homeowners), commercial auto, workers' compensation and professional liability. The Reinsurance & Monoline Excess segment writes casualty and property reinsurance plus monoline excess coverage. Underwriting is handled by many separate operating units that focus on particular industries, products or regions, while the parent company provides capital, risk oversight and investment management. In the first six months of 2026, net premiums earned were $6.30B and net investment income was $823.0M, out of total revenues of $7.41B.