alleghany corporation

Founded in 1929, Alleghany Corporation operated for decades as an investment holding company with a primary focus on property and casualty (P&C) reinsurance and insurance. Its principal operating subsidiaries include Transatlantic Holdings, Inc. (TransRe), a leading global reinsurer, and Alleghany Insurance Holdings LLC (AIHL), which owns several specialty insurance companies such as RSUI Group and CapSpecialty. On October 19, 2022, Alleghany Corporation was acquired by Berkshire Hathaway Inc. and now operates as a wholly-owned, independent subsidiary, continuing its focus on its core insurance and reinsurance operations.