White Mountains Insurance Group (WTM) News Today $1,773.25 +19.63 (+1.12%) Closing price 09/19/2025 03:59 PM EasternExtended Trading$1,770.46 -2.79 (-0.16%) As of 09/19/2025 04:22 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Headlines Stock AnalysisChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock WTM Latest News All Sources Trusted Sources MarketBeat Barchart Benzinga Bloomberg GlobeNewswire GuruFocus MarketWatch Motley Fool NASDAQ PR Newswire Reuters Seeking Alpha TalkMarkets The Street TipRanks The Wall Street Journal Wall Street Zen Yahoo Finance Source Sentiment refers to the positivity or negativity of each headline according to our language processing algorithm. Sentiment All Sentiments Very Positive Positive Neutral Negative Very Negative Most Recent September 2025 August 2025 July 2025 June 2025 May 2025 April 2025 March 2025 February 2025 January 2025 December 2024 November 2024 October 2024 September 2024 August 2024 July 2024 June 2024 May 2024 April 2024 March 2024 February 2024 January 2024 December 2023 November 2023 October 2023 September 2023 August 2023 July 2023 June 2023 May 2023 April 2023 March 2023 February 2023 January 2023 December 2022 November 2022 October 2022 Time Period Reinhart Partners LLC. Has $74.90 Million Stock Position in White Mountains Insurance Group, Ltd. $WTMSeptember 18 at 7:17 AM | marketbeat.comStrs Ohio Invests $2.21 Million in White Mountains Insurance Group, Ltd. $WTMSeptember 17 at 3:26 AM | marketbeat.comGoldman Sachs Group Inc. Acquires 1,504 Shares of White Mountains Insurance Group, Ltd. $WTMSeptember 16, 2025 | marketbeat.comWhite Mountains Insurance Group, Ltd. $WTM Stock Holdings Reduced by AQR Capital Management LLCSeptember 12, 2025 | marketbeat.comWhite Mountains Insurance Group (NYSE:WTM) Sees Large Volume Increase - Here's What HappenedSeptember 11, 2025 | marketbeat.comDoes White Mountains Insurance Group’s Leadership Transition Signal a Strategic Shift for WTM Investors?September 9, 2025 | finance.yahoo.comSelect Equity Group L.P. Raises Holdings in White Mountains Insurance Group, Ltd. $WTMSeptember 9, 2025 | marketbeat.comWhite Mountains Insurance Group, Ltd. $WTM Shares Sold by Cove Street Capital LLCSeptember 6, 2025 | marketbeat.comWhite Mountains Insurance: Not Much To Be Excited AboutSeptember 3, 2025 | seekingalpha.comWhite Mountains Acquires Controlling Stake in DistinguishedSeptember 3, 2025 | tipranks.comLIAM CAFFREY TO BECOME CEO OF WHITE MOUNTAINS IN 2026September 2, 2025 | prnewswire.comNorthern Trust Corp Buys 151 Shares of White Mountains Insurance Group, Ltd. $WTMSeptember 1, 2025 | marketbeat.comAmerican Century Companies Inc. Buys 1,661 Shares of White Mountains Insurance Group, Ltd. $WTMAugust 28, 2025 | marketbeat.comInvesco Ltd. Sells 329 Shares of White Mountains Insurance Group, Ltd. $WTMAugust 28, 2025 | marketbeat.comHotchkis & Wiley Capital Management LLC Sells 473 Shares of White Mountains Insurance Group, Ltd. $WTMAugust 26, 2025 | marketbeat.comDouglass Winthrop Advisors LLC Takes $368,000 Position in White Mountains Insurance Group, Ltd. $WTMAugust 26, 2025 | marketbeat.comWhite Mountains Insurance Group, Ltd. $WTM Shares Sold by Wellington Management Group LLPAugust 26, 2025 | marketbeat.comFiduciary Management Inc. WI Buys 22,681 Shares of White Mountains Insurance Group, Ltd. $WTMAugust 24, 2025 | marketbeat.comWhite Mountains Insurance Group, Ltd. $WTM Shares Purchased by T. Rowe Price Investment Management Inc.August 24, 2025 | marketbeat.comRaymond James Financial Inc. Sells 748 Shares of White Mountains Insurance Group, Ltd. $WTMAugust 23, 2025 | marketbeat.comNuveen LLC Invests $14.96 Million in White Mountains Insurance Group, Ltd. $WTMAugust 23, 2025 | marketbeat.comDoes White Mountains Insurance Group's Earnings Reversal Signal Sustainable Momentum for WTM Investors?August 21, 2025 | finance.yahoo.comWhite Mountains Insurance Group, Ltd. $WTM Shares Sold by Fuller & Thaler Asset Management Inc.August 20, 2025 | marketbeat.comBrandywine Global Investment Management LLC Has $6.98 Million Holdings in White Mountains Insurance Group, Ltd. (NYSE:WTM)August 19, 2025 | marketbeat.comDimensional Fund Advisors LP Lowers Stock Position in White Mountains Insurance Group, Ltd. (NYSE:WTM)August 19, 2025 | marketbeat.comCharles Schwab Investment Management Inc. Has $47.58 Million Stake in White Mountains Insurance Group, Ltd. (NYSE:WTM)August 18, 2025 | marketbeat.comLord Abbett & CO. LLC Sells 265 Shares of White Mountains Insurance Group, Ltd. (NYSE:WTM)August 17, 2025 | marketbeat.comVanguard Group Inc. Has $481.68 Million Stake in White Mountains Insurance Group, Ltd. (NYSE:WTM)August 16, 2025 | marketbeat.comAtria Wealth Solutions Inc. Acquires Shares of 211 White Mountains Insurance Group, Ltd. (NYSE:WTM)August 16, 2025 | marketbeat.comWhite Mountains Insurance Group, Ltd. (NYSE:WTM) Shares Sold by Boston PartnersAugust 15, 2025 | marketbeat.comWhite Mountains (WTM) Q2 Revenue Up 74%August 7, 2025 | fool.comWHITE MOUNTAINS REPORTS SECOND QUARTER RESULTSAugust 7, 2025 | gurufocus.comWhite Mountains Insurance Group Ltd Reports Q2 2025 Revenue of $689. ...August 7, 2025 | gurufocus.comWhite Mountains Insurance Group, Ltd. (NYSE:WTM) Sees Large Increase in Short InterestAugust 7, 2025 | marketbeat.comWHITE MOUNTAINS REPORTS SECOND QUARTER RESULTSAugust 7, 2025 | prnewswire.comWhite Mountains Insurance Group, Ltd. (NYSE:WTM) Shares Sold by Phocas Financial Corp.August 4, 2025 | marketbeat.comTD Asset Management Inc Acquires 212 Shares of White Mountains Insurance Group, Ltd. (NYSE:WTM)August 3, 2025 | marketbeat.comWhite Mountains Insurance Group (NYSE:WTM) Stock Acquired Rep. J. French HillJuly 26, 2025 | marketbeat.comWhite Mountains Insurance Group Stock (WTM) Opinions on BroadStreet InvestmentJuly 25, 2025 | quiverquant.comQRoyce & Associates LP Has $22.32 Million Stake in White Mountains Insurance Group, Ltd. (NYSE:WTM)July 25, 2025 | marketbeat.comWhite Mountains Insurance Group (NYSE:WTM) Sees Large Volume Increase - Time to Buy?July 24, 2025 | marketbeat.comAM Best Assigns Credit Ratings to DavidShield Insurance CompanyJuly 21, 2025 | businesswire.comVictory Capital Management Inc. Acquires 4,543 Shares of White Mountains Insurance Group, Ltd. (NYSE:WTM)July 21, 2025 | marketbeat.comWhite Mountains Completes $150M Investment in BroadStreetJuly 18, 2025 | tipranks.comForum Financial Management LP Acquires 289 Shares of White Mountains Insurance Group, Ltd. (NYSE:WTM)July 17, 2025 | marketbeat.comCooke & Bieler LP Increases Stock Holdings in White Mountains Insurance Group, Ltd. (NYSE:WTM)July 17, 2025 | marketbeat.comWhite Mountains Insurance Group (NYSE:WTM) Sees Unusually-High Trading Volume - Still a Buy?July 16, 2025 | marketbeat.com3,540 Shares in White Mountains Insurance Group, Ltd. (NYSE:WTM) Acquired by Edgestream Partners L.P.July 15, 2025 | marketbeat.comNisa Investment Advisors LLC Sells 370 Shares of White Mountains Insurance Group, Ltd. (NYSE:WTM)July 15, 2025 | marketbeat.comEnvestnet Asset Management Inc. Increases Stock Holdings in White Mountains Insurance Group, Ltd. (NYSE:WTM)July 14, 2025 | marketbeat.com Get White Mountains Insurance Group News Delivered to You Automatically Sign up to receive the latest news and ratings for WTM and its competitors with MarketBeat's FREE daily newsletter. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. WTM Media Mentions By Week WTM Media Sentiment Learn about the media sentiment score. Each headline receives a score ranging from 2 (good news) to -2 (bad news). Our company news sentiment scores track the average news sentiment of articles about each company over the most recent 7 days in order to identify companies that are receiving positive press. WTM News Sentiment▼1.641.04▲Average Finance News Sentiment WTM News Coverage Learn about the media coverage comparison. We track news headlines from hundreds of news outlets and tag them by company. This chart compares the number of articles about this company in the last seven days compared with the average number of articles about this company on a typical week. WTM Articles This Week▼34▲WTM Articles Average Week Get the Latest News and Ratings for WTM and Related Stocks Enter your email address to receive the latest news and analysts' ratings for White Mountains Insurance Group and its competitors. 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