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White Mountains Insurance Group, Ltd. competitors & alternatives
The 12 closest competitors and alternatives to White Mountains Insurance Group, Ltd. among insurance companies — ranked by similarity to what White Mountains Insurance Group, Ltd. actually does, not by market-cap band.
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About White Mountains Insurance Group, Ltd.
White Mountains Insurance Group is a diversified insurance and related financial services holding company based in Hamilton, Bermuda. Redomiciled from Delaware, United States, on October 25, 1999, the company conducts most of its business through its insurance subsidiaries and other affiliates.
White Mountains Insurance Group, Ltd. at a glance
White Mountains Insurance Group, Ltd. is an insurance company headquartered in Hamilton, Bermuda. It is publicly listed (WTM) with a market capitalisation of $4.9B. Xcout tracks 38 named people at White Mountains Insurance Group, Ltd., including Timothy Michael Miller (Chief Executive Officer of OneBeacon Ltd, President of OneBeacon Ltd and Chief Operating Officer of Onebeacon).
White Mountains Insurance Group, Ltd. leadership
- Timothy Michael MillerChief Executive Officer of OneBeacon Ltd, President of OneBeacon Ltd and Chief Operating Officer of Onebeacon
- Liam CaffreyChief Executive Officer & Director
- Giles Edward HarrisonPresident
- Giles HarrisonPresident
- Michael PapamichaelMD & CFO
- Michaela J. HildrethMD & Chief Accounting Officer
32 more named people on record for White Mountains Insurance Group, Ltd., with roles, board committees and tenure — see the full roster →
Top 12 White Mountains Insurance Group, Ltd. competitors
Ranked by semantic similarity — how close each company is to White Mountains Insurance Group, Ltd. by what it does, using Xcout's live company graph. Click any company for its full profile, or its competitor set.
Similar insurance company
Allied World Assurance Company Holdings, Ltd. is a Bermuda-based insurance holding company associated with the Allied World group, which provides specialty property, casualty, and reinsurance products. Its subsidiaries serve commercial businesses, institutions, and other insurers by underwriting complex and specialty risks.
Similar insurance company
W. R. Berkley Corporation functions as an insurance holding company, primarily underwriting commercial policies across the United States and globally. Its extensive operations are divided into two principal divisions: Insurance, and Reinsurance & Monoline Excess. The Insurance segment delivers a wide spectrum of commercial insurance solutions. This includes foundational coverages such as general liability, property, commercial auto, and professional liability, alongside specialized offerings like workers' compensation, environmental policies for diverse businesses, directors and officers (D&O) liability, cyber risk protection, and niche policies for fine arts and jewelry. The segment also extends to personal lines, providing home and automobile insurance, and specialized liability products for sectors such as law enforcement and public officials. Additionally, it offers accident and health insurance, group life, and crime and fidelity products, coupled with risk management and alternative risk program services. The Reinsurance & Monoline Excess segment focuses on assisting other insurance carriers and self-insured entities in effectively managing their overall risk exposure. This is accomplished through both treaty reinsurance, which handles portfolios of policies, and facultative reinsurance, designed for individual risks. Founded in 1967, W. R. Berkley Corporation is headquartered in Greenwich, Connecticut.
Similar insurance company
Hamilton Insurance Group Ltd. is a holding company, which provides insurance and reinsurance services. It operates through the International and Bermuda segments. The International segment comprises of property, specialty, and casualty insurance and reinsurance classes of business originating from the company's London, Dublin, and Hamilton Select operations. The Bermuda segment offers property, specialty, and casualty insurance and reinsurance classes of business originating from Hamilton Re, Bermuda and Hamilton Re US and subsidiaries. The company was founded in 2013 and is headquartered in Hamilton, Bermuda.
Insurance & Reinsurance
Alleghany Corporation, a subsidiary of Berkshire Hathaway, owns and supports property and casualty reinsurance and insurance operating subsidiaries.
Similar insurance company
Mosaic Insurance Holdings Limited is a global specialty insurer headquartered in Hamilton, Bermuda, with major underwriting operations and offices in London, New York, and Chicago.
Similar insurance company
Coralisle Group Ltd. is a major insurance and financial services provider offering comprehensive coverage across the Caribbean region. The group is headquartered in Hamilton, Bermuda.
Similar insurance company
James River Group Holdings, Ltd. operates as an insurance holding company, delivering specialized insurance and reinsurance offerings across the United States through its subsidiary companies. Its business activities are divided into three main operational units: Excess and Surplus Lines, Specialty Admitted Insurance, and Casualty Reinsurance. The Excess and Surplus Lines division is responsible for underwriting commercial liability and property insurance for non-standard or unique risks, with its coverage extending nationwide across all U.S. states and the District of Columbia. The distribution of these insurance products is primarily handled by wholesale insurance brokers. Conversely, the Specialty Admitted Insurance segment focuses on providing workers' compensation protection. This includes serving industries such as construction trades, healthcare professionals, general goods and services, light manufacturing, specialized transportation, and farming. This unit also engages in fronting and program insurance ventures. Finally, the Casualty Reinsurance segment offers both proportional and working layer casualty reinsurance solutions to a range of third-party clients and other insurance providers. James River Group Holdings, Ltd. was established in 2002 and maintains its corporate headquarters in Pembroke, Bermuda.
Similar insurance company
Maiden Holdings Ltd. offers personalized reinsurance services and products, specifically excluding high-impact catastrophic events, to insurance companies ranging from small to medium in size. The firm's operations are divided into two main segments: Diversified Reinsurance and AmTrust Reinsurance. The Diversified Reinsurance division oversees a collection of property and casualty reinsurance contracts. In contrast, the AmTrust Reinsurance segment covers business that AmTrust has transferred to Maiden Bermuda. Maiden Holdings was established in 2007 and its corporate headquarters are situated in Hamilton, Bermuda.
Similar insurance company
Assured Guaranty Ltd. is a leading provider of municipal bond insurance and financial guarantees for infrastructure and structured financings. Headquartered in Hamilton, Bermuda, the company also maintains a major office in midtown New York alongside other locations.
Similar insurance company
Everest Group, Ltd., together with subsidiaries, provides reinsurance and insurance products in the United States, Europe, and internationally. It operates in two segment, Insurance and Reinsurance. The company writes property and casualty reinsurance; treaty and facultative reinsurance products; and specialty lines of business through reinsurance brokers, as well as directly with ceding companies; and writes property and casualty insurance directly, as well as through brokers, surplus lines, and general agents. It provides reinsurance products comprising mortgage, catastrophe, marine, aviation, engineering, professional line, credit and surety, motor, agriculture/crop, and political violence reinsurance products. In addition, the company offers commercial property and casualty insurance products through wholesale and retail brokers, surplus lines brokers, and program administrators. The company was formerly known as Everest Re Group, Ltd. and changed its name to Everest Group, Ltd. in July 2023.Everest Group, Ltd., was founded in 1973 and is headquartered in Hamilton, Bermuda.
Similar insurance company
Compre Group is an insurance company headquartered in Bermuda with extensive operations and licensed entities in the United States.
Similar insurance company
Arch Capital Group Ltd., together with its subsidiaries, provides insurance, reinsurance, and mortgage insurance products in the United States, Canada, Bermuda, the United Kingdom, Europe, and Australia. The company operates through three segments: Insurance, Reinsurance, and Mortgage. The Insurance segment offers commercial automobile; commercial multiperil; financial and professional line liability; admitted, excess, and surplus casualty lines; property and short-tail specialty; workers compensation; and casualty insurance. Its Reinsurance segment provides reinsurance products for casualty; marine and aviation; property catastrophe; property excluding property catastrophe; and other specialty products. The Mortgage segment offers U.S. primary mortgage insurance business written predominantly on loans sold to the Federal National Mortgage Association and Federal Home Loan Mortgage Corporation; reinsurance and underwriting services related to the U.S. credit-risk transfer business and other U.S. mortgage reinsurance transactions; and international mortgage insurance and reinsurance business covering loans. It markets its products through a group of licensed independent retail and wholesale brokers. The company was formerly known as Risk Capital Holdings, Inc. Arch Capital Group Ltd. was founded in 1995 and is headquartered in Pembroke, Bermuda.
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