White Mountains Insurance Group's quarterly market cap
increased
from Sep. 2025 ($4,304 Mil) to Dec. 2025 ($5,154 Mil) and
increased
from Dec. 2025 ($5,154 Mil) to Mar. 2026 ($5,442 Mil).
White Mountains Insurance Group's annual market cap
increased
from Dec. 2023 ($3,853 Mil) to Dec. 2024 ($4,995 Mil) and
increased
from Dec. 2024 ($4,995 Mil) to Dec. 2025 ($5,154 Mil).
Enterprise Value is the theoretical takeover price. It is more comprehensive than market capitalization (market cap), which only includes common equity. Enterprise Value is calculated as the market cap plus debt and minority interest and preferred shares, minus total cash and cash equivalents. White Mountains Insurance Group's Enterprise Value for Today is $6,561 Mil.
White Mountains Insurance Group (NYSE:WTM) Market Cap Explanation
Market cap is not the real price you pay for a company. If you buy the company and become its owner, you become the owner of the cash the company has, and you also assume the companys debt. The real price you pay is the Enterprise Value.
Warren Buffett uses the ratio of total market cap of all public traded companies over GDP to measure if the market is expensive. As of April 2012, the US total market cap is about $14.7 trillion, while the US GDP is about $15 trillion. The market was modestly overvalued.
White Mountains Insurance Group Market Cap Related Terms
White Mountains Insurance Group Market Cap Historical Data
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Insurance - Property & Casualty subindustry, White Mountains Insurance Group's Market Cap, along with its competitors' market caps and Market Cap data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
White Mountains Insurance Group Market Cap vs Insurance Industry
For the Insurance industry and Financial Services sector, White Mountains Insurance Group's Market Cap distribution charts can be found below:
* The bar in red indicates where White Mountains Insurance Group's Market Cap falls into.
White Mountains Insurance Group Market Cap Calculation
Market cap is the short version of market capitalization. It is the total market value to buy the whole company. It is equal to the share price times the number of shares outstanding.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
White Mountains Insurance Group (WTM) has a Market Cap of $5,059 Mil as of Jun. 25, 2026. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on White Mountains Insurance Group and its competitors. According to the industry distribution chart, White Mountains Insurance Group ranks #135 out of 519 companies in the Insurance industry, placing it in the top 26%.
Is White Mountains Insurance Group's Market Cap too high?
White Mountains Insurance Group's current Market Cap is $5,059 Mil. The Insurance industry median Market Cap is 667.83. White Mountains Insurance Group's value of $5,059 Mil is 657.5% above this industry median. Based on the distribution chart, White Mountains Insurance Group ranks #135 out of 519 companies in the Insurance industry, which is above the industry midpoint. Overall, White Mountains Insurance Group has a GF Score™ of 76/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does White Mountains Insurance Group's Market Cap compare to SIGI and MCY?
According to the Insurance industry distribution chart, White Mountains Insurance Group ranks #135 out of 519 companies for Market Cap. This puts White Mountains Insurance Group in the upper half of its industry. The industry median Market Cap is 667.83. White Mountains Insurance Group's value of $5,059 Mil is 657.5% above this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Market Cap for an Insurance company?
The median Market Cap among Insurance companies is 667.83, based on 519 companies in the industry. Companies in the top quartile (top 25%) have a Market Cap significantly above this median, while those in the bottom quartile fall well below. However, Market Cap should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. White Mountains Insurance Group's current Market Cap of $5,059 Mil is 657.5% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Market Cap mean?
A high Market Cap can signal that a stock is expensive relative to its fundamentals. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on White Mountains Insurance Group and its competitors. For the Insurance industry, the median Market Cap is 667.83 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. White Mountains Insurance Group's current Market Cap is $5,059 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is White Mountains Insurance Group stock overvalued right now?
Based on GuruFocus' analysis, White Mountains Insurance Group (WTM) is currently considered Modestly Undervalued. The stock's GF Value™ is $2,346.07, compared to a current price of $2,042.76 — trading 12.9% below its estimated fair value. The current Market Cap is $5,059 Mil and 657.5% above the Insurance industry median of 667.83. White Mountains Insurance Group's overall GF Score™ is 76/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Market Cap calculated?
Market Cap is calculated from a company's financial statements. For White Mountains Insurance Group (WTM), the current Market Cap is $5,059 Mil as of Jun. 25, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is White Mountains Insurance Group (WTM) Overvalued in 2026?
Based on GuruFocus' analysis, White Mountains Insurance Group stock appears to be undervalued.
The current stock price of $2,042.76 is trading 12.9% below its estimated GF Value™ of $2,346.07.
GuruFocus considers White Mountains Insurance Group to be Modestly Undervalued.
Key valuation signals for WTM:
Market Cap: $5,059 Mil
GF Value™: $2,346.07 vs. price of $2,042.76 (12.9% below fair value)
Industry Position: 657.5% above the Insurance median (#135 of 519)
No single metric tells the full story. See the WTM stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
White Mountains Insurance Group Business Description
White Mountains Insurance Group Ltd is engaged in the business of making opportunistic and value-oriented acquisitions of businesses and assets in the insurance, financial services, and related sectors, operating these businesses and assets through its subsidiaries and, if and when attractive exit valuations become available, disposing of these businesses and assets. The company conducts its business in five areas: property and casualty insurance and reinsurance, municipal bond reinsurance, capital solutions for asset and wealth management firms, property and casualty insurance distribution, and other operations. The company has four reportable segments: Ark/WM Outrigger, HG Global, Kudu and Distinguished.
76GF Score
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