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The 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk over the past year. As of today (2026-07-22), White Mountains Insurance Group's 1-Year Sharpe Ratio is 0.57.
White Mountains Insurance Group (NYSE:WTM) 1-Year Sharpe Ratio Explanation
The 1-Year Sharpe Ratio inidicates the risk-adjusted return of an investment over the past year. It is calculated as the annualized result of the average monthly excess return divided by its standard deviation over the past year. The monthly excess return is the monthly investment return minus the monthly risk-free rate (typically the 10-year Treasury Constant Maturity Rate). If the risk-free rate for a specific region is not available, U.S. data is used by default.
The greater a portfolio's Sharpe Ratio, the better its risk-adjusted performance. A negative Sharpe Ratio means the risk-free rate is greater than the portfolio’s historical or projected return, or else the portfolio's return is expected to be negative.
White Mountains Insurance Group 1-Year Sharpe Ratio Related Terms
WTM vs RLI, SIGI, LMND: 1-Year Sharpe Ratio Comparison
For the Insurance - Property & Casualty subindustry, White Mountains Insurance Group's 1-Year Sharpe Ratio, along with its competitors' market caps and 1-Year Sharpe 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 1-Year Sharpe Ratio vs Insurance Industry
For the Insurance industry and Financial Services sector, White Mountains Insurance Group's 1-Year Sharpe Ratio distribution charts can be found below:
* The bar in red indicates where White Mountains Insurance Group's 1-Year Sharpe Ratio falls into.
White Mountains Insurance Group 1-Year Sharpe Ratio Calculation
The 1-Year Sharpe Ratio measures the performance of an investment such as a stock or portfolio compared to a risk-free asset. A stock / portfolio's 1-Year Sharpe Ratio can be calculated by dividing the difference between the one-year returns of the investment and the risk-free rate, by the standard deviation of the investment returns over one year.
White Mountains Insurance Group (WTM) has a 1-Year Sharpe Ratio of 0.57 as of Jul. 22, 2026. 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk. View historical data for White Mountains Insurance Group and its competitors.
Is White Mountains Insurance Group's 1-Year Sharpe Ratio too high?
White Mountains Insurance Group's current 1-Year Sharpe Ratio is 0.57. Overall, White Mountains Insurance Group has a GF Score™ of 74/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does White Mountains Insurance Group's 1-Year Sharpe Ratio compare to RLI and SIGI?
White Mountains Insurance Group's 1-Year Sharpe Ratio of 0.57 can be compared against companies in the Insurance industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 1-Year Sharpe Ratio for an Insurance company?
A good 1-Year Sharpe Ratio depends on the Insurance industry context. However, 1-Year Sharpe Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high 1-Year Sharpe Ratio mean?
A high 1-Year Sharpe Ratio can signal that a stock is expensive relative to its fundamentals. 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk. View historical data for White Mountains Insurance Group and its competitors. White Mountains Insurance Group's current 1-Year Sharpe Ratio is 0.57. 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 Fairly Valued. The stock's GF Value™ is $2,379.37, compared to a current price of $2,178.88 — trading 8.4% below its estimated fair value. The current 1-Year Sharpe Ratio is 0.57. White Mountains Insurance Group's overall GF Score™ is 74/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 1-Year Sharpe Ratio calculated?
1-Year Sharpe Ratio is calculated from a company's financial statements. For White Mountains Insurance Group (WTM), the current 1-Year Sharpe Ratio is 0.57 as of Jul. 22, 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 $2,178.88 is trading 8.4% below its estimated GF Value™ of $2,379.37.
GuruFocus considers White Mountains Insurance Group to be Fairly Valued.
Key valuation signals for WTM:
1-Year Sharpe Ratio: 0.57
GF Value™: $2,379.37 vs. price of $2,178.88 (8.4% below fair value)
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.
74GF Score
Get the complete analysis for WTM
1-Year Sharpe Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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