InsidersTradesSigma
Follow the White Mountains Insurance Group Ltd share price and the full directors' dealings record of the company, a listed equity based in United States. Shares trade on the US market, under the authority of SEC (Form 4). Operating in the Banks sector, White Mountains Insurance Group Ltd has published 121 insider filings. Market capitalisation: €5.1bn. The latest transaction was disclosed on 31 August 2026 (Don). Among the most active insiders: Hildreth Michaela. Every trade is openly available.
121
Insider Decl.
n/a
Thresholds
€141,444
2 ops.
Buy Volume
€20m
8 ops.
Sell Volume
54Σ signal
This score ranks the purchase within its own market. No market currently meets the historical allocation criteria, so signals remain watch-only. Not investment advice.
Fundamental score
Ranked 639 of 29,063 companies
83.5
score / 100
Value85
Quality82
FCF yld11%
Earn yld22%
EV/EBITDA7.8x
ROE20%
Gross mgn·
Net mgn38%
Debt/EBITDA1.1x
Pillars2/3
Transparent value + quality ranking, distinct from the insider signal.
Sigma AI Analysis
Fundamental view, insider signal, bull and bear case, synthesis.
AI analysis generation is paused.
Last declaration on 31 August 2026
Declarations121 total
2 shares0Common SharesSEC:0000776867-26-000051:0
113 shares0Common SharesSEC:0000776867-26-000049:0
135 shares0Common SharesSEC:0000776867-26-000036:0
135 shares0Common SharesSEC:0000776867-26-000038:0
135 shares0Common SharesSEC:0000776867-26-000037:0
135 shares0Common SharesSEC:0000776867-26-000041:0
50 shares0Common SharesSEC:0000776867-26-000025:0
225 shares0Common SharesSEC:0000776867-26-000023:0
1,500 shares0Common Shares (Restricted)SEC:0000776867-26-000021:0
775 shares0Common Shares (restricted)SEC:0000776867-26-000020:0
600 shares0Common Shares (Restricted)SEC:0000776867-26-000019:0
500 shares0Common Shares (Restricted)SEC:0000776867-26-000018:0
775 shares0Common Shares (restricted)SEC:0000776867-26-000017:0
274 shares@ US$2,078.0323.3% of flowCommon SharesSEC:0000776867-26-000010:0
398 shares@ US$2,078.0326.6% of flowCommon SharesSEC:0000776867-26-000007:0
425 shares@ US$2,078.0348.9% of flowCommon SharesSEC:0000776867-26-000006:0
131 shares@ US$2,078.03100.0% of flowCommon SharesSEC:0000776867-26-000009:0
60 shares0Common SharesSEC:0000776867-25-000034:0
5,000 shares0Common SharesSEC:0000776867-25-000030:0
5,000 shares@ US$2,050.0059.6% of flowCommon SharesSEC:0000776867-25-000029:0
5,000 shares@ US$2,050.0076.9% of flowCommon SharesSEC:0000776867-25-000032:0
165 shares@ US$2,048.51100.0% of flowCommon SharesSEC:0000776867-25-000025:0
50 shares0Common SharesSEC:0000776867-25-000021:0
4 shares0Common SharesSEC:0001318960-25-000008:0
25 of 121 declarations
关于 White Mountains Insurance Group Ltd
White Mountains Insurance Group Ltd. (NYSE: WTM) 是一家总部位于百慕大的控股公司，其经济足迹以美国为中心，长期专注于保险、再保险和资本配置。尽管该公司在法律上注册于百慕大，但其在纽约证券交易所上市，并且其大部分业务活动、投资和运营公司合作都与美国相关联。White Mountains 最好被理解为一个保险和投资平台，而非传统的单一业务承运商。([investor.whitemountains.com](https://investor.whitemountains.com/news-releases/news-release-details/white-mountains-reports-fourth-quarter-results-8?utm_source=openai)) 该集团的根源可追溯到几十年前，当时它被建立为一个专业保险资本工具，结合了承保专业知识和严谨的投资管理。随着时间的推移，White Mountains 已发展成为一家多元化的控股公司，通过保险业务、战略性股权和资产负债表部署，寻求长期价值创造。其模式强调风险调整后的回报、承保纪律以及资本分配的灵活性。([investor.whitemountains.com](https://investor.whitemountains.com/?utm_source=openai)) 在运营方面，White Mountains 的核心保险敞口来自 Ark/WM Outrigger，该公司承保专业保险和再保险业务，包括具有重大巨灾风险的财产险和意外险。该集团还拥有 HG Global，该公司与 BAM (Build America Mutual) 相关联，并提供金融担保/市政保险市场的敞口。此外，White Mountains 还建立并支持了其他几个平台投资，包括参与资产管理公司现金流的 Kudu；与保险分销和营销相关的 MediaAlpha；以及保险分销平台 Bamboo。在2025年和2026年，该公司还宣布了新的资本部署，如 Enterprise Solutions 和 Bishop Street Underwriters，强化了其积极的投资姿态。([investor.whitemountains.com](https://investor.whitemountains.com/news-releases/news-release-details/white-mountains-reports-fourth-quarter-results-8?utm_source=openai)) 竞争定位更多地由专业化、承保质量以及支持资本、技术专长和执行力至关重要的利基业务的意愿驱动，而非规模。这使得 White Mountains 在美国保险领域拥有独特的形象：它不试图成为一个广泛的大众市场保险公司，而是选择性地拥有那些能够随着时间推移复合账面价值的企业和资产头寸。实际上，该公司在严谨的风险选择、资产负债表实力以及支持专业市场增长的能力方面展开竞争。([investor.whitemountains.com](https://investor.whitemountains.com/news-releases/news-release-details/white-mountains-reports-fourth-quarter-results-8?utm_source=openai)) 近期发展是积极的。2026年2月，White Mountains 公布了2025年业绩，截至2025年12月31日，每股账面价值为$2,188，全年增长25%，这得益于 Bamboo 的出售、稳健的运营公司业绩以及有利的投资回报。管理层还强调了 BAM 的创纪录活动和 Ark 强劲的保费增长。对于投资者而言，这种组合突显了 White Mountains 作为一家在美国纽约证券交易所上市的利基保险资本配置者的身份，其价值创造来自承保和战略性投资组合管理。([investor.whitemountains.com](https://investor.whitemountains.com/news-releases/news-release-details/white-mountains-reports-fourth-quarter-results-8?utm_source=openai))
