| WTM Shares Outstanding History Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below is a table of the WTM shares outstanding history going back to 2/25/2010:
Also see: WTM Market Cap History WTM YTD Return |
As of 5/1/2026 White Mountains Insurance Group has 2.48 million WTM shares outstanding. Investors often track the WTM shares outstanding history to compare shareholder return trends against the change in share count over time.
This page shows WTM share count trends over time, with 65 historical shares outstanding datapoints presented, dating back to 2/25/2010.

| WTM Shares Outstanding History Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below is a table of the WTM shares outstanding history going back to 2/25/2010:
Also see: WTM Market Cap History WTM YTD Return |
| WTM Shares Outstanding History Chart | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
WTM Historical Shares Outstanding: -7.56% CAGR
Mouse over chart for data details
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| WTM Stock Price Chart |
| About White Mountains Insurance Group Ltd |
| White Mountains Insurance Group, Ltd. is a financial services holding company. Co. operates through four segments: Ark/WM Outrigger, HG Global/BAM, Kudu and Bamboo. The Ark/WM Outrigger segment is engaged in specialty property and casualty insurance and reinsurance business that offers a range of niche insurance and reinsurance products, including property, specialty, marine and energy, accident and health, and casualty. The HG Global/BAM segment is engaged in the mutual municipal bond insurance business in the U.S.. We show 65 historical shares outstanding datapoints in our coverage of WTM's shares outstanding history. Understanding the changing numbers of WTM shares outstanding — and comprehending the concept of differing number of shares outstanding in general comparing companies like WTM versus peers — is critical for investors. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies. Furthermore, via issuance of new shares over time, or the repurchase of existing shares, the number of shares outstanding can fluctuate over the course of history. With this page we aim to empower investors researching WTM by allowing them to research WTM shares outstanding history as well as any other stock in our coverage universe. |
| WTM Current Stock Quote |
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| Video: Shares Outstanding Importance | |
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| WTM Share Performance |
| Shares Outstanding Peers |
| White Mountains Insurance Group (WTM) is categorized under the Financials sector; to help you further research historical shares outstanding numbers, below are some other companies in the same sector:
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