Fundamental analysis WTM (White Mountains Insurance Group Ltd)

Updated on 06/07/2026

We analyzed White Mountains Insurance Group stock against the 10 quality criteria of Lubin Investment. The company gets a quality score of 9/10, meaning high quality, and a P/FCF valuation multiple of 8.4×.

Sector: Insurance - Property & Casualty. Listing: US. Current price: 2065.14 USD.

Lubin scoring methodology

White Mountains Insurance Group Ltd (WTM)'s score is calculated automatically from 10 objective financial criteria, with no human intervention or opinion. Each criterion is validated (YES / PARTIAL / NO) based on thresholds drawn from the financial literature (Warren Buffett, Bettin-Mauboussin, Aswath Damodaran). The final score is the sum of validations.

The 10 quantitative criteria analyzed

1. Profitable: positive net margin
2. Growing revenue: revenue growing > 10%/year over 5 years
3. Growing earnings per share: FCF per share adjusted for stock-based compensation, > 10%/year over 5 years
4. Share count under control: stable or declining (net buybacks = value creation for shareholders)
5. Cash profitability: free cash flow margin > 10% of revenue
6. Expanding margins: operating margin widens over 5 years (operating leverage)
7. Return on invested capital: Bettin-Mauboussin Cash ROCE > 15% per year
8. Debt under control: net debt repayable in less than 3 years of free cash flow
9. Earnings converted to cash: free cash flow exceeds accounting net income
10. Net collection period: short or negative cash conversion cycle

Frequently asked questions

Is White Mountains Insurance Group a quality stock?

White Mountains Insurance Group gets a quality score of 9/10 (high quality), calculated over the 10 Lubin Investment criteria: profitability, revenue and free cash flow growth, share buybacks, margins, debt and return on capital.

How is White Mountains Insurance Group's score calculated?

The score is the total of validated criteria (YES / PARTIAL / NO) using thresholds drawn from the financial literature (Warren Buffett, Mauboussin, Aswath Damodaran), automatically and with no human opinion.

What is White Mountains Insurance Group's P/FCF?

The price-to-free-cash-flow (P/FCF) multiple of White Mountains Insurance Group stock is 8.4×. At Lubin Investment, valuation is judged separately from quality.

Where to see White Mountains Insurance Group's full analysis?

The full interactive analysis (10-criteria detail, history, P/FCF valuation, sector comparisons) is available at https://lubin-investment.com/analyse/WTM?lng=en.

Other stocks in the Insurance Property & Casualty sector

• W. R. Berkley (WRB) — score 10/10, P/FCF 7.0×
• Progressive (PGR) — score 10/10, P/FCF 7.4×
• Mercury General (MCY) — score 10/10, P/FCF 4.0×
• Assurant (AIZ) — score 10/10, P/FCF 9.3×
• Kinsale Capital Group (KNSL) — score 10/10, P/FCF 7.1×

Go further

👉 See the full interactive analysis of WTM

Other resources : Detailed methodology · All stocks in the Insurance Property & Casualty sector · Stocks rated 10 out of 10 · Top quality companies · Lubin Investment pricing.