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White Mountains Insurance GroupWTM +0.02%74 Cyclically Adjusted PB Ratio is 1.40 as of Aug. 26, 2026, which is 1% above its 10-year median of 1.38. GuruFocus rates WTM with a GF Score™ of 74/100 and a GF Value™ of $2,438.36 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 412 Insurance companies, White Mountains Insurance Group ranks worse than 50.49% on this metric.
The historical rank and industry rank for White Mountains Insurance Group's Cyclically Adjusted PB Ratio or its related term are showing as below:
WTM'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.94 Med: 1.38 Max: 1.64
Current: 1.4
During the past years, White Mountains Insurance Group's highest Cyclically Adjusted PB Ratio was 1.64. The lowest was 0.94. And the median was 1.38.
WTM's Cyclically Adjusted PB Ratio is ranked worse than 50.49% of 412
companies
in the Insurance industry
Industry Median: 1.39
vs WTM: 1.40
The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.
White Mountains Insurance Group's adjusted book value per share data for the three months ended in Jun. 2026 was $2,257.352. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is $1,525.70 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
White Mountains Insurance Group (NYSE:WTM) Cyclically Adjusted PB Ratio Explanation
Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.
White Mountains Insurance Group Cyclically Adjusted PB Ratio Related Terms
White Mountains Insurance Group Cyclically Adjusted PB Ratio 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.
White Mountains Insurance Group Cyclically Adjusted PB Ratio Chart
WTM vs RLI, SIGI, MCY: Cyclically Adjusted PB Ratio Comparison
For the Insurance - Property & Casualty subindustry, White Mountains Insurance Group's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio 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 Cyclically Adjusted PB Ratio vs Insurance Industry
For the Insurance industry and Financial Services sector, White Mountains Insurance Group's Cyclically Adjusted PB Ratio distribution charts can be found below:
* The bar in red indicates where White Mountains Insurance Group's Cyclically Adjusted PB Ratio falls into.
White Mountains Insurance Group Cyclically Adjusted PB Ratio Calculation
Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.
* 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.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
What does a Cyclically Adjusted PB Ratio of 1.40 mean?
White Mountains Insurance Group (WTM) has a Cyclically Adjusted PB Ratio of 1.40 as of Aug. 26, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on White Mountains Insurance Group and its competitors. This is near median its historical median of 1.38. Over the past decade, White Mountains Insurance Group's Cyclically Adjusted PB Ratio has ranged from 0.94 to 1.64. According to the industry distribution chart, White Mountains Insurance Group ranks #208 out of 412 companies in the Insurance industry, placing it in the top 50.5%.
Is White Mountains Insurance Group's Cyclically Adjusted PB Ratio too high?
White Mountains Insurance Group's current Cyclically Adjusted PB Ratio of 1.40 is near median its 10-year median of 1.38. Over the past 10 years, this metric has ranged from a low of 0.94 to a high of 1.64. The Insurance industry median Cyclically Adjusted PB Ratio is 1.39. White Mountains Insurance Group's value of 1.40 is 0.7% above this industry median. Based on the distribution chart, White Mountains Insurance Group ranks #208 out of 412 companies in the Insurance industry, which is below the industry midpoint. Overall, White Mountains Insurance Group has a GF Score™ of 74/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does White Mountains Insurance Group's Cyclically Adjusted PB Ratio compare to RLI and SIGI?
According to the Insurance industry distribution chart, White Mountains Insurance Group ranks #208 out of 412 companies for Cyclically Adjusted PB Ratio. This places White Mountains Insurance Group in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.39. White Mountains Insurance Group's value of 1.40 is 0.7% above this benchmark. Historically, White Mountains Insurance Group's own Cyclically Adjusted PB Ratio has ranged from 0.94 to 1.64 over the past decade. While the company's 10-year median is 1.38 vs. the industry median of 1.39, White Mountains Insurance Group has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted PB Ratio for an Insurance company?
The median Cyclically Adjusted PB Ratio among Insurance companies is 1.39, based on 412 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. White Mountains Insurance Group's current Cyclically Adjusted PB Ratio of 1.40 is 0.7% 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 Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on White Mountains Insurance Group and its competitors. For the Insurance industry, the median Cyclically Adjusted PB Ratio is 1.39 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. White Mountains Insurance Group's current Cyclically Adjusted PB Ratio is 1.40, which is near median its own 10-year median of 1.38. 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 $2,438.36, compared to a current price of $2,141.65 — trading 12.2% below its estimated fair value. The current Cyclically Adjusted PB Ratio is 1.40, which is near median its 10-year median of 1.38 and 0.7% above the Insurance industry median of 1.39. White Mountains Insurance Group's overall GF Score™ is 74/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For White Mountains Insurance Group (WTM), the current Cyclically Adjusted PB Ratio is 1.40 as of Aug. 26, 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 $2,141.65 is trading 12.2% below its estimated GF Value™ of $2,438.36.
GuruFocus considers White Mountains Insurance Group to be Modestly Undervalued.
Key valuation signals for WTM:
Cyclically Adjusted PB Ratio: 1.40 (near median its 10-year median of 1.38)
GF Value™: $2,438.36 vs. price of $2,141.65 (12.2% below fair value)
Industry Position: 0.7% above the Insurance median (#208 of 412)
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 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.
74GF Score
Get the complete analysis for WTM
Cyclically Adjusted PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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