White Mountains Insurance Group's biggest risks in the FY2024 10-K
- White Mountains faces substantial catastrophe exposure in property and casualty underwriting through Ark and WM Outrigger Re.
The risks most specific to White Mountains Insurance Group
- Risks Related to White Mountains
As of December 31, 2024, we had total goodwill and other intangible assets of $720 million on our consolidated balance sheet, $355 million of which relates to our acquisition of Bamboo and $293 million of which relates to our acquisition of Ark
We held $720 million in goodwill and intangibles as of December 31, 2024, including $355 million from Bamboo and $293 million from Ark.
- Risks Related to Ark/WM Outrigger’s Business and Industry
Unpredictable catastrophic events could materially adversely affect our results of operations and financial condition
Ark and WM Outrigger Re face unpredictable catastrophe losses worldwide from natural disasters like hurricanes, earthquakes, and wildfires.
- Risks Related to HG Global’s Business and Industry
HG Re is only licensed to provide reinsurance to BAM. If BAM does not maintain its favorable financial strength rating from Standard & Poor’s, it could materially adversely affect HG Re’s business and, consequently, could materially adversely affect our results of operations and financial condition
HG Re provides reinsurance exclusively to BAM and depends on BAM maintaining an AA or better rating from Standard & Poor’s.
- Risks Related to HG Global’s Business and Industry
If BAM does not pay some or all of the principal and interest due on the BAM Surplus Notes, it could materially adversely affect our results of operations and financial condition
We held $301 million in BAM Surplus Notes principal and $195 million in accrued interest, valued at $382 million subject to NYDFS approval.
- Risks Related to Bamboo’s Business and Industry
Bamboo’s business is dependent on its capacity providers (both fronting and reinsurance), and a change in availability, terms or ratings could materially impact Bamboo’s results of operations and financial condition or adversely affect its ability to write business
Bamboo relies entirely on capacity providers to bear insurance risk for its MGA and program administrator operations.
- Risks Related to Bamboo’s Business and Industry
Bamboo and its fronting partners are subject to extensive regulation which may prevent Bamboo from adequately pricing or selecting risk
Bamboo and its fronting partners face heavy regulation, primarily in California, requiring state approval for policy forms and premium rates.
- Risks Related to Investments
We may be subject to volatility from our investment in MediaAlpha, which could materially adversely affect our results of operations and financial condition
Our investment in MediaAlpha is valued at $202 million based on its closing share price of $11.29 on December 31, 2024.
- Risks Related to Taxation
We may not meet the requirements of the five-year deferral from the Bermuda corporate income tax or the OECD Pillar Two Undertaxed Profits Rule, which could materially adversely affect our results of operations and financial condition
We may fail to qualify for the five-year deferral from Bermuda's 15% corporate income tax or the OECD Pillar Two UTPR.
All 26 risk factors
Headings as the filing states them, in filing order.
Risks Related to White Mountains
- 01We have successfully created shareholder value through acquisitions and dispositions. We may not be able to continue to create shareholder value through such transactions in the future, which could materially adversely affect our results of operations and financial condition
- 02As of December 31, 2024, we had total goodwill and other intangible assets of $720 million on our consolidated balance sheet, $355 million of which relates to our acquisition of Bamboo and $293 million of which relates to our acquisition of Ark
Risks Related to Ark/WM Outrigger’s Business and Industry
- 03Unpredictable catastrophic events could materially adversely affect our results of operations and financial condition
- 04Ark and its subsidiaries benefit from favorable financial strength ratings from A.M. Best, Standard & Poor’s and others, the deterioration of which could materially adversely affect its ability to conduct business and, consequently, could materially adversely affect our results of operations and financial condition
- 05Ark may not successfully alleviate risk through reinsurance and retrocessional arrangements, which could materially adversely affect our results of operations and financial condition
- 06The property and casualty insurance and reinsurance industries are highly competitive and cyclical, and Ark may not be able to compete effectively in the future, which could materially adversely affect our results of operations and financial condition
- 07Ark/WM Outrigger’s loss and LAE reserves may be inadequate to cover the ultimate liability for losses, and as a result, our results of operations and financial condition could be adversely affected
Risks Related to HG Global’s Business and Industry
- 08HG Re is only licensed to provide reinsurance to BAM. If BAM does not maintain its favorable financial strength rating from Standard & Poor’s, it could materially adversely affect HG Re’s business and, consequently, could materially adversely affect our results of operations and financial condition
- 09Certain sectors of the municipal bond insurance industry are highly competitive, and BAM may not be able to compete effectively in the future, which could materially adversely affect HG Re’s business and, consequently, could materially adversely affect our results of operations and financial condition
- 10We are exposed to losses from municipal bond insurance written by BAM through our reinsurance treaties between HG Re and BAM, which could materially adversely affect our results of operations and financial condition
- 11If BAM does not pay some or all of the principal and interest due on the BAM Surplus Notes, it could materially adversely affect our results of operations and financial condition
- 12We may be subject to greater volatility from the BAM Surplus Notes, as the valuation of the BAM Surplus Notes under the discounted cash flow analysis subsequent to deconsolidation could be more volatile, which could materially adversely affect our results of operations and financial condition
Risks Related to Kudu’s Business and Industry
- 13Kudu’s financial performance is dependent upon its clients’ asset and performance-based fees, which are subject to a variety of economic, market and other risks
Risks Related to Bamboo’s Business and Industry
- 14Bamboo’s business is dependent on its capacity providers (both fronting and reinsurance), and a change in availability, terms or ratings could materially impact Bamboo’s results of operations and financial condition or adversely affect its ability to write business
- 15Bamboo primarily relies on third-party agents and brokers to distribute its products, and any deterioration in the relationships with these parties could adversely affect Bamboo’s business
- 16Bamboo and its fronting partners are subject to extensive regulation which may prevent Bamboo from adequately pricing or selecting risk
Risks Related to Investments
- 17We may be subject to volatility from our investment in MediaAlpha, which could materially adversely affect our results of operations and financial condition
Risks Related to Taxation
- 18We may not meet the requirements of the five-year deferral from the Bermuda corporate income tax or the OECD Pillar Two Undertaxed Profits Rule, which could materially adversely affect our results of operations and financial condition
- 19On July 11, 2023, the U.K. enacted conforming legislation adopting the Pillar Two IIR and QDMTT, which became effective for fiscal years beginning on or after December 31, 2023
- 20Changes in tax laws or tax treaties could materially adversely affect our results of operations and financial condition
Risks Related to Laws and Regulation
- 21Regulation may have a material adverse effect on our operations and financial condition
- 22Bermuda law differs from the laws in effect in the United States and may afford less protection to shareholders
- 23We could be materially adversely affected if our controls designed to ensure compliance with guidelines, policies, and legal and regulatory standards are not effective
- 24We may be unable to adequately maintain our systems and safeguard the security of our data, which could adversely impact our ability to operate our business and cause reputational harm and, consequently, could materially adversely affect our results of operations and financial condition
- 25We may suffer losses from unfavorable outcomes from litigation and other legal proceedings, which could materially adversely affect our results of operations and financial condition
- 26We depend on our key personnel to manage our business effectively, and they may be difficult to replace, which could materially adversely affect our results of operations and financial condition
Other White Mountains Insurance Group 10-Ks
- FY2025 10-K risk factors22 risks1 new5 dropped8 reworded
Valuation volatility of BAM Surplus Notes created a new specific risk factor. Book value exposure shifted through changes in asset valuations like MediaAlpha. Reinsurance and tax compliance risks were updated to reflect current operational structures.
Filed Feb 27, 2026
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The headings are the filing's own. The one-line readings and the overview are automated and can be wrong: read Item 1A of the 10-K for the exact wording.