White Mountains Insurance Group (WTM) Stock Chart & Stock Price History $1,778.38 -14.73 (-0.82%) As of 11:43 AM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock White Mountains Insurance Group Stock Price Performance The White Mountains Insurance Group (WTM) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 1.78%, with a year-to-date return of -8.57%. In the past month, the stock has increased 0.85%, reflecting recent market activity. As of the latest close, White Mountains Insurance Group traded at $1,799.04 with a market cap of $4.62 billion and volume of 25,176 shares. Five years ago, the stock traded at $870.56, representing a 104.28% increase over that period. At the time, it had a market cap of $2.73 billion and a volume of 16,900 shares. Receive WTM Stock News and Ratings via EmailSign-up to receive the latest news and ratings for White Mountains Insurance Group and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance-1.11%1 Month Performance+0.85%3 Month Performance+1.76%Year-To-Date Performance-8.57%1 Year Performance+1.78%5 Year Performance+104.28% WTM Stock Chart for Wednesday, July, 16, 2025 WTM Chart by TradingView White Mountains Insurance Group Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization07/15/2025$1,830.82$1,799.04-1.74%$1,823.00$1,793.1125,176 shs$4.62 billion07/14/2025$1,798.34$1,830.82+1.81%$1,831.19$1,805.1024,898 shs$4.71 billion07/11/2025$1,794.40$1,798.34+0.22%$1,801.74$1,787.0022,480 shs$4.62 billion07/10/2025$1,801.20$1,794.40-0.38%$1,807.94$1,788.1445,276 shs$4.61 billion07/09/2025$1,799.50$1,801.20+0.09%$1,820.71$1,798.7628,739 shs$4.64 billion07/08/2025$1,782.38$1,799.50+0.96%$1,815.00$1,793.8851,058 shs$4.62 billion07/07/2025$1,785.30$1,782.38-0.16%$1,802.00$1,781.5943,575 shs$4.58 billion07/04/2025$1,785.30$1,785.30$1,788.90$1,756.4030,626 shs$4.59 billion07/03/2025$1,757.40$1,785.30+1.59%$1,788.90$1,756.4030,626 shs$4.59 billion07/02/2025$1,791.54$1,757.40-1.91%$1,762.00$1,750.0024,823 shs$4.52 billion Get the Latest News and Ratings for WTM and Related StocksEnter your email address below to receive the latest news and analysts' ratings for White Mountains Insurance Group and its competitors with MarketBeat's FREE daily newsletter. 07/01/2025$1,789.99$1,791.54+0.09%$1,805.24$1,790.0120,771 shs$4.60 billion06/30/2025$1,784.83$1,789.99+0.29%$1,805.57$1,785.4225,285 shs$4.61 billion06/27/2025$1,804.37$1,784.83-1.08%$1,817.50$1,763.8227,045 shs$4.59 billion06/26/2025$1,751.88$1,804.37+3.00%$1,806.44$1,755.7430,849 shs$4.64 billion06/25/2025$1,775.71$1,751.88-1.34%$1,766.00$1,749.8926,698 shs$4.50 billion06/24/2025$1,783.75$1,775.71-0.45%$1,781.17$1,767.1816,963 shs$4.56 billion06/23/2025$1,746.92$1,783.75+2.11%$1,786.27$1,745.2519,656 shs$4.58 billion06/20/2025$1,748.62$1,746.92-0.10%$1,770.71$1,741.2826,413 shs$4.49 billion06/19/2025$1,748.62$1,748.62$1,772.04$1,750.0817,041 shs$4.49 billion06/18/2025$1,748.58$1,748.62+0.00%$1,772.04$1,750.0817,041 shs$4.49 billion06/17/2025$1,763.45$1,748.58-0.84%$1,772.82$1,749.4416,460 shs$4.50 billion06/16/2025$1,776.44$1,763.45-0.73%$1,784.00$1,762.0116,225 shs$4.54 billion Related Companies Erie Indemnity Stock Chart Fidelity National Financial Stock Chart CNA Financial Stock Chart Old Republic International Stock Chart Axis Capital Stock Chart RLI Stock Chart First American Financial Stock Chart The Hanover Insurance Group Stock Chart Selective Insurance Group Stock Chart Assured Guaranty Stock Chart Receive WTM Stock News and Ratings via EmailSign-up to receive the latest news and ratings for White Mountains Insurance Group and its competitors with MarketBeat's FREE daily newsletter. This page (NYSE:WTM) was last updated on 7/16/2025 by MarketBeat.com Staff From Our PartnersMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredRevolutionary AI Tech Targets Early Diabetic Blindness Detection FDA Trial UnderwayTiny Stock, Massive Potential— this company’s AI platform is a game changer for healthcare!Interactive Offers | SponsoredINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredCentral Banks Are Hoarding Gold – Should You?The AI boom isn’t just transforming technology—it’s redefining global power, increasing government debt, and u...Lear Capital | SponsoredMajor Rollout of Social Security X?To All Americans Born Before April 16th, 1963: Did Trump Just Give The Green Light To Radically RE-DO Social S...Banyan Hill Publishing | SponsoredI warned you about Nvidia… now look what’s happeningNvidia just got Trump’s greenlight to sell high-powered AI chips to China — and their stock surged 5% before t...Timothy Sykes | SponsoredWhich Gold Miner Trades at 30% of NAV? 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