Insights

Strategic investments White Mountains is actively expanding through stakes in growing platforms like Bishop Street Underwriters, signaling openness to partnerships and capital deployment with MGA and related financial services businesses. This presents a sales opportunity to offer specialized underwriting, reinsurance capabilities, or MGA support services aligned with their growth thesis.

Leadership transition The company is undergoing a CEO transition with Liam Caffrey taking the role in 2026, indicating a potential appetite for strategic realignment and external partnerships to accelerate execution. Approach with executive-level value propositions, governance-friendly solutions, and targeted offerings that bolster post-transition initiatives.

Investor engagement White Mountains maintains active investor communications and hosts an annual information meeting, suggesting a cadence of due diligence and ongoing performance storytelling. There is an opening to provide investor relations tooling, data analytics, and strategic communications services to enhance their capital markets narrative.

Diversified risk portfolio As a diversified insurance and financial services holding company with a compact employee base, White Mountains likely values scalable, efficient technology and back-office solutions. This creates opportunities for modular insurtech platforms, workflow automation, and cost-effective compliance and risk management services.

Strategic partnerships The firm emphasizes being a reliable partner to shareholders and management teams, with international domiciling and multiple locations. This openness to partnerships, combined with recent growth investments, signals receptiveness to collaborative risk-sharing models, distribution agreements, and tailored underwriting partnerships.

White Mountains Insurance Group Tech Stack

White Mountains Insurance Group uses 8 technology products and services including gstatic.com, WordPress, Lightbox, and more. Explore White Mountains Insurance Group's tech stack below.

  • gstatic.com
    Content Delivery Network
  • Content Management System
  • Lightbox
    Javascript Libraries
  • Office Suites
  • Windows Server
    Operating Systems
  • Platform As A Service
  • Yoast SEO
    Search Engines
  • Animate.css
    UI Frameworks

Media & News

White Mountains Insurance Group's Email Address Formats

White Mountains Insurance Group uses at least 1 format(s):
White Mountains Insurance Group Email FormatsExamplePercentage
FLast@whitemountains.comJDoe@whitemountains.com
92%
FirstLast@whitemountains.comJohnDoe@whitemountains.com
4%
First.Last@whitemountains.comJohn.Doe@whitemountains.com
3%
First_Last@whitemountains.comJohn_Doe@whitemountains.com
1%

Frequently Asked Questions

What is White Mountains Insurance Group's phone number?

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You can contact White Mountains Insurance Group's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is White Mountains Insurance Group's stock symbol?

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White Mountains Insurance Group is a publicly traded company; the company's stock symbol is WTM.

What is White Mountains Insurance Group's official website and social media links?

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White Mountains Insurance Group's official website is whitemountains.com and has social profiles on LinkedIn.

How much revenue does White Mountains Insurance Group generate?

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As of July 2026, White Mountains Insurance Group's annual revenue is estimated to be $50M - $100M.

What is White Mountains Insurance Group's NAICS code?

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White Mountains Insurance Group's NAICS code is 524 - Insurance Carriers and Related Activities.

How many employees does White Mountains Insurance Group have currently?

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As of July 2026, White Mountains Insurance Group has approximately 15 employees across 2 continents, including North AmericaEurope. Key team members include Vp And Cao/Controller: L. B.Vice President: G. R.Senior Vice President, Equities/Alternative Investments: R. J.. Explore White Mountains Insurance Group's employee directory with LeadIQ.

What industry does White Mountains Insurance Group belong to?

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White Mountains Insurance Group operates in the Insurance industry.

What technology does White Mountains Insurance Group use?

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White Mountains Insurance Group's tech stack includes gstatic.comWordPressLightboxOffice 365Windows ServerWP EngineYoast SEOAnimate.css.

What is White Mountains Insurance Group's email format?

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White Mountains Insurance Group's email format typically follows the pattern of FLast@whitemountains.com. Find more White Mountains Insurance Group email formats with LeadIQ.

When was White Mountains Insurance Group founded?

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White Mountains Insurance Group was founded in 1985.
White Mountains Insurance Group logo

White Mountains Insurance Group

InsuranceHamilton Parish, Bermuda11-50 Employees

White Mountains Insurance Group is a diversified holding company operating in the insurance and related financial services sectors, owning and managing a portfolio of businesses. It positions itself as a dependable partner for its portfolio companies and shareholders, aiming to create value through prudent, opportunistic management. The company is domiciled in Hamilton Parish, Bermuda, with executive headquarters in Hanover, New Hampshire, and maintains offices in Boston and Guilford, Connecticut.

It trades on the New York Stock Exchange under the ticker WTM. Manning Rountree retired as chief executive officer at the end of 2025, and Liam Caffrey is slated to assume the role on January 1, 2026.

Section iconCompany Overview

Phone number
Stock Symbol
WTM
NAICS Code
524 - Insurance Carriers and Related Activities
Founded
1985
Employees
11-50

Section iconFunding & Financials

  • $50M - $100M

    White Mountains Insurance Group's revenue is estimated to be in the range of $50M - $100M

Section iconFunding & Financials

  • $50M - $100M

    White Mountains Insurance Group's revenue is estimated to be in the range of $50M - $100M

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