White Mountains Insurance (WTM) Market Capitalization (2009 - 2026)
White Mountains Insurance's Market Capitalization was $4.95 billion in Q2 2026, up 7.0% from $4.62 billion a year earlier but down 9.1% from the prior quarter.
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Analysis
White Mountains Insurance (WTM) Market Capitalization (2009 - 2026) Analysis & Trends
For FY2025, Market Capitalization at White Mountains Insurance came in at $5.15 billion, up 3.2% from FY2024.
- Market Capitalization has now increased for four consecutive years, with a five-year compound annual growth rate of 10.7% (FY2020 to FY2025).
- In earlier years, Market Capitalization was $5 billion in FY2024 (+29.6%), $3.85 billion in FY2023 (+5.9%), $3.64 billion in FY2022 (+18.9%) and $3.06 billion in FY2021 (-1.4%).
- Quarterly Market Capitalization has moved between $3.06 billion (Q4 2021) and $5.44 billion (Q1 2026) over five years.
- Compared with a year earlier, Market Capitalization has increased for three straight quarters, with growth averaging 8.6% over the last eight quarters.
- The best year-over-year quarter for Market Capitalization over five years was Q3 2021 (growth of 34.1%); the worst was Q2 2023 (a decline of 3.0%).
- Per Business Quant data, WTM's Market Capitalization in the three quarters before Q2 2026 was $5.44 billion (Q1 2026), $5.15 billion (Q4 2025) and $4.3 billion (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) |
|---|---|---|---|---|
| 1 | Berkshire Hathaway | 1,082.55 Bn | -334.93 Bn | 55.86 Bn |
| 2 | Chubb | 128.03 Bn | 80.09 Bn | 9.13 Bn |
| 3 | Progressive | 122.38 Bn | 98.22 Bn | 9.04 Bn |
| 4 | Marsh & Mclennan Companies | 81.46 Bn | 73.20 Bn | - |
| 5 | Travelers Companies | 75.77 Bn | 52.02 Bn | 6.23 Bn |
| 6 | Manulife Financial | 73.91 Bn | 75.11 Bn | - |
| 7 | Metlife | 60.71 Bn | -45.77 Bn | 7.82 Bn |
| 8 | Aon | 58.53 Bn | 51.77 Bn | - |
| 9 | Arthur J. Gallagher | 58.38 Bn | 52.82 Bn | - |
| 10 | White Mountains Insurance | 4.83 Bn | -5.85 Bn | 764.50 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 4.95 Bn |
| Mar 31, 2026 | 5.44 Bn |
| Dec 31, 2025 | 5.15 Bn |
| Sep 30, 2025 | 4.30 Bn |
| Jun 30, 2025 | 4.62 Bn |
| Mar 31, 2025 | 4.96 Bn |
| Dec 31, 2024 | 5.00 Bn |
| Sep 30, 2024 | 4.36 Bn |
| Jun 30, 2024 | 4.67 Bn |
| Mar 31, 2024 | 4.60 Bn |
| Dec 31, 2023 | 3.85 Bn |
| Sep 30, 2023 | 3.83 Bn |
| Jun 30, 2023 | 3.56 Bn |
| Mar 31, 2023 | 3.53 Bn |
| Dec 31, 2022 | 3.64 Bn |
| Sep 30, 2022 | 3.36 Bn |
| Jun 30, 2022 | 3.67 Bn |
| Mar 31, 2022 | 3.40 Bn |
| Dec 31, 2021 | 3.06 Bn |
| Sep 30, 2021 | 3.24 Bn |
API Access
White Mountains Insurance Market Capitalization API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=market-capitalization&ticker=WTM&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "market-capitalization", "ticker": "WTM", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=market-capitalization&ticker=WTM&period=max&api_key=YOUR_API_KEY");
const data = await res.json();