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White Mountains Insurance (WTM) Stock: Why It's Up Today
Updated Oct 20, 2026, 1:16 PM ET · intraday price
What changed since yesterday
- Trading at $2,198.94 as of 1:16 PM ET, +1.47% vs the prior close of $2,167.12.
- Volume 9.86K shares, 0.5x its 50-day average (light).
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
Compare with peers today
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WTM rises 1.5% to $2,198.94, a 1-month high, 9 up days in a row. Trading at $2,198.94 (intraday, 1:16 PM ET), +1.47% vs the prior close of $2,167.12. Day range $2,179.96–$2,204.35, opened at $2,179.00.
Price (intraday)$2,198.94+1.47%
Day range2,179.96–2,204.35
Open2,179.00
Volume9.86K
52-week range1,863.60–2,333.00
Avg volume (20d)17.21K
WTM daily analysis — what happened
A plain-English, data-only note for every US trading day (today's note updates every 2 hours while the market is open). Newest first; older days stay archived below.
Oct 20, 2026 — WTM rises 1.5% to $2,198.94, a 1-month high, 9 up days in a row
- Trading at $2,198.94 (intraday, 1:16 PM ET), +1.47% vs the prior close of $2,167.12. Day range $2,179.96–$2,204.35, opened at $2,179.00.
- Volume was 9.86K shares, 0.5x its 50-day average of 20.52K — lighter than usual.
- Price is +5.4% vs its 50-day average ($2,085.37) and +3.2% vs its 200-day average ($2,129.93).
- 52-week range $1,863.60–$2,333.00; the current price sits at 71% of that range, 5.7% below the 52-week high.
- That makes 9 straight gains.
Oct 19, 2026 — WTM rises 0.3% to $2,167.12, a 1-month high, 8 up days in a row
- Closed at $2,167.12, +0.32% vs the prior close of $2,160.31. Day range $2,152.97–$2,177.63, opened at $2,147.10.
- Volume was 16.98K shares, 0.8x its 50-day average of 20.78K.
- Price is +4.0% vs its 50-day average ($2,083.59) and +1.8% vs its 200-day average ($2,129.15).
- 52-week range $1,830.13–$2,333.00; today's close sits at 67% of that range, 7.1% below the 52-week high.
- That makes 8 straight gains.
Oct 16, 2026 — WTM rises 0.8% to $2,160.31, a 1-month high, 7 up days in a row
- Closed at $2,160.31, +0.77% vs the prior close of $2,143.73. Day range $2,137.93–$2,172.04, opened at $2,146.23.
- Volume was 21.81K shares, 1.0x its 50-day average of 20.93K.
- Price is +3.7% vs its 50-day average ($2,083.24) and +1.5% vs its 200-day average ($2,128.70).
- 52-week range $1,830.13–$2,333.00; today's close sits at 66% of that range, 7.4% below the 52-week high.
- That makes 7 straight gains.
Oct 15, 2026 — WTM rises 2.2% to $2,143.73, a 1-month high, 6 up days in a row
- Closed at $2,143.73, +2.18% vs the prior close of $2,098.01. Day range $2,109.00–$2,152.25, opened at $2,124.97.
- Volume was 30.20K shares, 1.5x its 50-day average of 20.71K.
- Price is +2.9% vs its 50-day average ($2,082.85) and +0.7% vs its 200-day average ($2,128.29).
- 52-week range $1,830.13–$2,333.00; today's close sits at 62% of that range, 8.1% below the 52-week high.
- That makes 6 straight gains.
Oct 14, 2026 — WTM ends flat (+0.2%) to $2,098.01, a 1-month high, 5 up days in a row
- Closed at $2,098.01, +0.23% vs the prior close of $2,093.13. Day range $2,069.25–$2,106.61, opened at $2,100.30.
- Volume was 18.90K shares, 0.9x its 50-day average of 20.80K.
- Price is +0.8% vs its 50-day average ($2,082.21) and -1.4% vs its 200-day average ($2,127.95).
- 52-week range $1,830.13–$2,333.00; today's close sits at 53% of that range, 10.1% below the 52-week high.
- That makes 5 straight gains.
Oct 13, 2026 — WTM rises 0.3% to $2,093.13, a 1-month high, 4 up days in a row
- Closed at $2,093.13, +0.31% vs the prior close of $2,086.76. Day range $2,079.04–$2,101.50, opened at $2,100.63.
- Volume was 16.10K shares, 0.8x its 50-day average of 20.88K.
- Price is +0.5% vs its 50-day average ($2,082.61) and -1.6% vs its 200-day average ($2,127.77).
- 52-week range $1,830.13–$2,333.00; today's close sits at 52% of that range, 10.3% below the 52-week high.
- That makes 4 straight gains.
Oct 12, 2026 — WTM rises 1.3% to $2,086.76, a 1-month high, 3 up days in a row
- Closed at $2,086.76, +1.27% vs the prior close of $2,060.63. Day range $2,064.96–$2,098.45, opened at $2,069.07.
- Volume was 24.60K shares, 1.2x its 50-day average of 20.64K.
- Price is +0.2% vs its 50-day average ($2,082.78) and -1.9% vs its 200-day average ($2,127.75).
- 52-week range $1,830.13–$2,333.00; today's close sits at 51% of that range, 10.6% below the 52-week high.
- That makes 3 straight gains.
Oct 9, 2026 — WTM ends flat (+0.0%) to $2,060.63
- Closed at $2,060.63, +0.04% vs the prior close of $2,059.77. Day range $2,046.41–$2,066.63, opened at $2,059.07.
- Volume was 20.20K shares, 1.0x its 50-day average of 20.62K.
- Price is -1.1% vs its 50-day average ($2,083.00) and -3.2% vs its 200-day average ($2,127.77).
- 52-week range $1,830.13–$2,333.00; today's close sits at 46% of that range, 11.7% below the 52-week high.
Oct 8, 2026 — WTM rises 1.4% to $2,059.77
- Closed at $2,059.77, +1.39% vs the prior close of $2,031.50. Day range $2,020.11–$2,064.04, opened at $2,036.57.
- Volume was 18.70K shares, 0.9x its 50-day average of 20.67K.
- Price is -1.2% vs its 50-day average ($2,084.16) and -3.2% vs its 200-day average ($2,127.88).
- 52-week range $1,830.13–$2,333.00; today's close sits at 46% of that range, 11.7% below the 52-week high.
Oct 7, 2026 — WTM ends flat (-0.3%) to $2,031.50
- Closed at $2,031.50, -0.28% vs the prior close of $2,037.25. Day range $2,029.36–$2,064.01, opened at $2,064.01.
- Volume was 20.40K shares, 1.0x its 50-day average of 20.61K.
- Price is -2.6% vs its 50-day average ($2,085.97) and -4.5% vs its 200-day average ($2,127.79).
- 52-week range $1,815.44–$2,333.00; today's close sits at 42% of that range, 12.9% below the 52-week high.
Oct 6, 2026 — WTM rises 0.9% to $2,037.25
- Closed at $2,037.25, +0.88% vs the prior close of $2,019.44. Day range $2,008.99–$2,038.78, opened at $2,015.64.
- Volume was 18.80K shares, 0.9x its 50-day average of 20.60K.
- Price is -2.5% vs its 50-day average ($2,089.39) and -4.3% vs its 200-day average ($2,127.84).
- 52-week range $1,815.44–$2,333.00; today's close sits at 43% of that range, 12.7% below the 52-week high.
Oct 5, 2026 — WTM ends flat (-0.1%) to $2,019.44
- Closed at $2,019.44, -0.07% vs the prior close of $2,020.92. Day range $2,019.44–$2,046.09, opened at $2,031.81.
- Volume was 20.40K shares, 1.0x its 50-day average of 20.43K.
- Price is -3.5% vs its 50-day average ($2,092.52) and -5.1% vs its 200-day average ($2,127.88).
- 52-week range $1,784.78–$2,333.00; today's close sits at 43% of that range, 13.4% below the 52-week high.
Oct 2, 2026 — WTM rises 0.4% to $2,020.92
- Closed at $2,020.92, +0.39% vs the prior close of $2,013.04. Day range $2,002.29–$2,034.90, opened at $2,012.30.
- Volume was 16.30K shares, 0.8x its 50-day average of 20.35K.
- Price is -3.6% vs its 50-day average ($2,096.30) and -5.0% vs its 200-day average ($2,128.01).
- 52-week range $1,650.00–$2,333.00; today's close sits at 54% of that range, 13.4% below the 52-week high.
WTM bull case vs bear case (from the data)
Bull case
- Price is +5.4% vs its 50-day average — short-term trend is up.
- Price is +3.2% vs its 200-day average — above the long-term trend line.
- Annual revenue grew 66.8% in the latest fiscal year (SEC XBRL).
- Latest fiscal-year net income: profit of $1.11B.
- Share count down 7.3% in a year (buybacks).
Bear case
- Insider selling outweighs buying: 16 sales vs 0 open-market buys among the 16 most recent reported insider trades (Form 4, last 12 months).
WTM latest news & SEC filings
Every SEC filing by or about WTM in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Aug 31, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Aug 27, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Aug 27, 2026 · Form 3 — New insider holdings
Initial insider ownership statement (Form 3) — a new director, officer or 10% owner disclosed their holdings
Aug 27, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 5.02 — Change in directors or officers (appointment, departure or pay).
Aug 26, 2026 · Form N-PX — Annual proxy voting record
Annual proxy voting record
Aug 12, 2026 · Form 13F-HR — Quarterly holdings report filed by an institutional investment manager
Quarterly holdings report filed by an institutional investment manager
Aug 6, 2026 · Form 10-Q — Quarterly report
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Revenue: $844.60M (prior year $689.20M) (+22.5% vs Jun 30, 2025)
- Net income: $199.50M (prior year $122.90M) (+62.3% vs Jun 30, 2025)
- Diluted EPS: $80.58 (prior year $47.75) (+68.8% vs Jun 30, 2025)
Aug 6, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 2.02 — Reported results of operations (earnings release).
This is a results-day filing: the earnings press release is attached as an exhibit.
Jun 30, 2026 · Form 11-K — Annual report for an employee stock plan
Annual report for an employee stock plan
Things to know before you trade WTM
- Last results release: Aug 6, 2026 (8-K Item 2.02). Previous ones: May 6, 2026, Feb 6, 2026, Nov 6, 2025. Based on that rhythm, the next report is likely around Nov 5, 2026 — an estimate, not a confirmed date.
- How much it moves: over the last 20 sessions the average daily move was 0.64% (largest 2.2%). That is a relatively calm stock.
- Liquidity: about 17.21K shares (≈$37.84M) trade per day on average.
- 52-week position: $2,198.94 vs a range of $1,863.60–$2,333.00 (71% of the range).
- Dividends: last ex-dividend date Mar 16, 2026 ($1/share); 1 payments in the past 12 months.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 16 sales; latest: George Manning Rountree sold 5,000 shares on Dec 19, 2025.
- Latest filings: 8-K Aug 27, 2026; 10-Q Aug 6, 2026; 8-K Aug 6, 2026.
- Share count: 2.39M shares outstanding (Aug 3, 2026), -7.3% vs a year earlier — the company has been reducing its share count.
- Listing: NYSE · industry: Fire, Marine & Casualty Insurance.
WTM market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 20, 2026 | 2,179.00 | 2,204.35 | 2,179.96 | 2,198.94 | 9.86K |
| Oct 19, 2026 | 2,147.10 | 2,177.63 | 2,147.10 | 2,167.12 | 17.00K |
| Oct 16, 2026 | 2,146.23 | 2,172.04 | 2,137.93 | 2,160.31 | 21.80K |
| Oct 15, 2026 | 2,124.97 | 2,152.25 | 2,109.00 | 2,143.73 | 30.20K |
| Oct 14, 2026 | 2,100.30 | 2,106.61 | 2,069.25 | 2,098.01 | 18.90K |
| Oct 13, 2026 | 2,100.63 | 2,101.50 | 2,079.04 | 2,093.13 | 16.10K |
| Oct 12, 2026 | 2,069.07 | 2,098.45 | 2,064.96 | 2,086.76 | 24.60K |
| Oct 9, 2026 | 2,059.07 | 2,066.63 | 2,046.41 | 2,060.63 | 20.20K |
| Oct 8, 2026 | 2,036.57 | 2,064.04 | 2,020.11 | 2,059.77 | 18.70K |
| Oct 7, 2026 | 2,064.01 | 2,064.01 | 2,029.36 | 2,031.50 | 20.40K |
| Oct 6, 2026 | 2,015.64 | 2,038.78 | 2,008.99 | 2,037.25 | 18.80K |
| Oct 5, 2026 | 2,031.81 | 2,046.09 | 2,019.44 | 2,019.44 | 20.40K |
| Oct 2, 2026 | 2,012.30 | 2,034.90 | 2,002.29 | 2,020.92 | 16.30K |
| Oct 1, 2026 | 1,999.98 | 2,023.86 | 1,999.22 | 2,013.04 | 14.20K |
| Sep 30, 2026 | 2,028.44 | 2,028.44 | 1,997.13 | 2,006.49 | 15.70K |
| Sep 29, 2026 | 2,010.77 | 2,028.01 | 2,002.61 | 2,021.51 | 12.80K |
| Sep 28, 2026 | 2,035.50 | 2,035.50 | 2,000.84 | 2,014.97 | 15.10K |
| Sep 25, 2026 | 2,047.99 | 2,049.99 | 2,018.27 | 2,028.62 | 9.20K |
| Sep 24, 2026 | 2,056.01 | 2,056.01 | 2,029.33 | 2,029.33 | 11.00K |
| Sep 23, 2026 | 2,049.76 | 2,069.89 | 2,028.11 | 2,032.01 | 12.90K |
About White Mountains Insurance
White Mountains Insurance (WTM) is listed on the NYSE and classified by the SEC under “Fire, Marine & Casualty Insurance”. Its business address is in HANOVER, NH. State of incorporation: Bermuda. Fiscal year ends December 31. SEC CIK 776867.
WTM board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| Reid Tarlton Campbell | Director | May 22, 2026 |
| Mary C Choksi | Director | May 22, 2026 |
| Liam P Caffrey | Chief Executive Officer | Feb 27, 2026 |
| Peter M Carlson | Director | May 22, 2026 |
| John Chu | Director | May 22, 2026 |
| Margaret Dillon | Director | May 22, 2026 |
| Philip A Gelston | Director | May 22, 2026 |
| Weston M Hicks | Director | May 22, 2026 |
| Stephen Klar | Director | Aug 27, 2026 |
| George Manning Rountree | Chief Executive Officer | Dec 22, 2025 |
| Suzanne F. Shank | Director | May 22, 2026 |
| David Allen Tanner | Director | Aug 31, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Liam P Caffrey | Chief Executive Officer | Feb 27, 2026 |
| Giles E Harrison | President | Feb 27, 2026 |
| Michaela Hildreth | MD & Chief Accounting Officer | Feb 27, 2026 |
| Michael A Papamichael | Chief Financial Officer | Feb 27, 2026 |
| George Manning Rountree | Chief Executive Officer | Dec 22, 2025 |
| Robert Lawrence Seelig | EVP & General Counsel | Mar 20, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Dec 19, 2025 | George Manning Rountree | Sale | 5,000 | $2,050.00 |
| Dec 19, 2025 | George Manning Rountree | Sale | 5,000 | $2,050.00 |
| Dec 19, 2025 | George Manning Rountree | Sale | 5,000 | $2,050.00 |
| Dec 19, 2025 | George Manning Rountree | Sale | 5,000 | $2,050.00 |
| Dec 19, 2025 | Reid Tarlton Campbell | Sale | 5,000 | — |
| Dec 19, 2025 | Reid Tarlton Campbell | Sale | 5,000 | — |
| Dec 19, 2025 | Reid Tarlton Campbell | Sale | 5,000 | — |
| Dec 19, 2025 | Reid Tarlton Campbell | Sale | 5,000 | — |
| Dec 19, 2025 | Reid Tarlton Campbell | Sale | 5,000 | $2,050.00 |
| Dec 19, 2025 | Reid Tarlton Campbell | Sale | 5,000 | $2,050.00 |
| Dec 19, 2025 | Reid Tarlton Campbell | Sale | 5,000 | $2,050.00 |
| Dec 19, 2025 | Reid Tarlton Campbell | Sale | 5,000 | $2,050.00 |
| Dec 16, 2025 | Philip A Gelston | Sale | 165 | $2,048.51 |
| Dec 16, 2025 | Philip A Gelston | Sale | 165 | $2,048.51 |
| Dec 16, 2025 | Philip A Gelston | Sale | 165 | $2,048.51 |
WTM financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| Dec 31, 2025 | $3.73B | $1.11B | 430.14 | $550.50M |
| Dec 31, 2024 | $2.24B | $230.40M | 89.79 | $586.80M |
| Dec 31, 2023 | $2.17B | $509.20M | 198.60 | $404.10M |
| Dec 31, 2022 | $1.16B | $792.80M | 276.96 | $365.00M |
| Dec 31, 2021 | $614.40M | $-275.40M | -89.46 | $38.60M |
Latest balance sheet: total assets $13.77B, total liabilities $7.51B, cash $136.40M (as of Jun 30, 2026).
WTM earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| Aug 6, 2026 | 8-K Item 2.02 (results) | $2,141.09 |
| May 6, 2026 | 8-K Item 2.02 (results) | $2,080.00 |
| Feb 6, 2026 | 8-K Item 2.02 (results) | $2,185.00 |
| Nov 6, 2025 | 8-K Item 2.02 (results) | $1,892.02 |
| Aug 7, 2025 | 8-K Item 2.02 (results) | $1,750.35 |
| May 7, 2025 | 8-K Item 2.02 (results) | $1,785.99 |
| Feb 7, 2025 | 8-K Item 2.02 (results) | $1,983.07 |
| Nov 6, 2024 | 8-K Item 2.02 (results) | $1,885.69 |
| Aug 7, 2024 | 8-K Item 2.02 (results) | — |
| May 9, 2024 | 8-K Item 2.02 (results) | — |
| Feb 7, 2024 | 8-K Item 2.02 (results) | — |
| Nov 6, 2023 | 8-K Item 2.02 (results) | — |
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: intraday data as of Oct 20, 2026, 1:16 PM ET. Filings: SEC EDGAR. Refreshed every 2 hours during US market hours.