WTM — White Mountains Insurance Group Ltd

✨ Hidden Gem

Stock analysis, trade plans, and proprietary indicators by Trend Edge.

About White Mountains Insurance Group Ltd

White Mountains Insurance Group, Ltd. provides insurance services in the United States, the United Kingdom, Bermuda, and internationally. It operates through Ark/WM Outrigger, HG Global, Kudu, Distinguished, and Other Operations segments. The company offers property insurance and reinsurance; specialty insurance and reinsurance consisting of aviation, contingency, cyber, fine art and specie, mortgage, nuclear, political and credit, space, surety,… Read full Trend Edge analysis →

Trend Edge Proprietary Indicators

Key Metrics

Current Price$2146.85
Market Cap$5.30B
Float2.4M
Shares Outstanding2.5M
P/E (Forward)13.87
P/E (TTM)5.29
Price/Sales (TTM)1.88
vs. Analyst Target-83.2% to analyst PT
Profit Margin37.02%
Operating Margin (TTM)0.27%
Revenue (TTM)$2.82B
Earnings Growth (YoY)-36.60%
Dividend Rate1.0%
Analyst Target Price$360.00

Financial History

Annual Revenue & Earnings History

YearRevenueNet IncomeGross ProfitEBITDA
2020 $896M $709M $813M $677M
2021 $614M -$275M $33.1M -$232M
2022 $1.16B $793M $371M -$105M
2023 $2.17B $509M $1.15B $610M
2024 $2.35B $230M $1.07B $371M
2025 $2.71B $1.11B $1.45B $1.41B

Recent Quarterly Revenue & Net Income

QuarterRevenueNet Income
Jun 2025 $689M $123M
Sep 2025 $864M $114M
Dec 2025 $576M $836M
Mar 2026 $515M -$31.1M

Ownership & Float

Insider Ownership3.0%
Institutional Ownership94.0%
Short Float3.3%
% of All Funds Holding4.12%
Number of Funds Holding339

Current Moving Averages

Trend Edge tracks near-term, medium-term, cyclical, and secular moving averages across weekly and monthly timeframes to identify trend structure at every horizon.

TimeframeSMAValueTrend Context
Weekly10-Week SMA$2193.40Near-term / short-term trend
Weekly40-Week SMA$2040.66Medium-term trend
Weekly80-Week SMA$1942.58Cyclical trend (business cycle)
Weekly200-Week SMA$1705.44Secular trend (multi-year)
Monthly10-Month SMA$2034.98Near-term monthly trend
Monthly20-Month SMA$1947.28Medium-term monthly trend
Monthly40-Month SMA$1772.64Secular monthly trend

Volume Shelves — Support & Resistance

Trend Edge identifies volume shelves: price zones where historically elevated trading volume creates structural support or resistance. A volume shelf forms when a disproportionate share of cumulative volume was transacted at a specific price level, making it a high-conviction anchor for future price reactions.

Price LevelTypeVolume RatioAge
$1670.00 support 1.56x 6 months ago

Historical Earnings Reactions (111 events)

TimeframeAvg ReturnMedianWin RateBestWorst
Gap 0.02% 0.00% 44.14% 5.84% -4.27%
1 Day 0.08% 0.13% 54.05% 7.94% -11.83%
1 Week 0.12% 0.24% 54.95% 11.65% -15.19%
2 Weeks 0.74% 1.02% 59.46% 14.38% -14.81%
1 Month 1.12% 1.09% 60.00% 18.99% -24.12%

Next earnings: July 25, 2026 (59 days away)

Seasonality & Day-of-Week Patterns

Monthly Seasonality

MonthAvg ReturnWin RateSamples
Jan0.8%53.7%41
Feb2.4%61.0%41
Mar0.7%58.5%41
Apr0.2%51.2%41
May2.8%70.0%40
Jun0.5%57.5%40
Jul1.0%47.5%40
Aug2.6%65.0%40
Sep-0.2%42.5%40
Oct1.0%57.5%40
Nov1.0%70.7%41
Dec0.7%53.7%41

Day-of-Week Tendencies

DayAvg ReturnWin RateSamples
Monday -0.02% 46.8% 1929
Tuesday 0.07% 47.6% 2097
Wednesday 0.06% 49.2% 2093
Thursday 0.07% 48.6% 2055
Friday 0.10% 50.4% 2045

Top Institutional Holders

Institutional holder breakdown coming soon.

Total institutional ownership: 94.0%

Insider Transactions — Smart Summary

Total insider ownership: 3.0%

12-Month Insider Activity Summary

Total Filings4
Net Value-$10.3M
Net Shares Change-15,165
% of Float-0.6%
C-Suite Filings1
Clusters Detected1

Key Insiders

NameTitleNet ValueFilingsActivity
Rountree George Manning Chief Executive Officer -$10.3M 1 1 sell
CAMPBELL REID TARLTON -$10.3M 2 2 sell
Gelston Philip A -$338,004.15 1 1 sell

Transaction Clusters

PeriodFilingsInsidersNet ValueSeniority
2025-12-16 – 2025-12-22 4 3 -$20.8M 1 C-suite

Significant Filings

DateInsiderTitleNet ValuePrice After
2025-12-22 Rountree George Manning Chief Executive Officer -$10.3M Transaction at $2050.00, now +4.7%
2025-12-22 CAMPBELL REID TARLTON -$10.3M Transaction at $2050.00, now +4.7%
2025-12-22 CAMPBELL REID TARLTON +N/A N/A
2025-12-16 Gelston Philip A -$338,004.15 Transaction at $2048.51, now +4.8%

View full insider transaction history on Trend Edge →

AI Consult Analysis

Trend Edge's AI Consult feature delivers a comprehensive, multi-layer trade plan for White Mountains Insurance Group Ltd (WTM) powered by Claude Opus — Anthropic's most capable AI model. The analysis covers five layers: technical analysis (near-term, medium-term, cyclical, and secular trend, momentum, volume shelf support and resistance, breakout and breakdown signals), qualitative analysis (business model, competitive moat, sector dynamics), insider sentiment (buy and sell signals from executive and director transactions), share stats analysis (institutional accumulation, fund positioning, short float squeeze potential), and fundamental analysis (valuation, revenue growth, profit margin, earnings quality).

AI Consult synthesizes all five layers into a single bullish or bearish thesis with explicit entry, exit, stop loss, and take profit levels — giving you a complete, AI-powered trade plan with defined risk/reward. Whether you are building a long position, initiating a short, or looking for a reversal setup, AI Consult identifies the highest-probability signal from the current trend.

Get the full AI Consult analysis for WTM on Trend Edge →