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Compare · WRB vs WTM

WRB vs WTM

Side-by-side comparison of W.R. Berkley Corporation (WRB) and White Mountains Insurance Group Ltd. (WTM): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both WRB and WTM operate in Property-Casualty Insurers (Finance), so they compete in similar markets.
  • WRB is the larger of the two at $25.53B, about 5.0x WTM ($5.11B).
  • Over the past year, WRB is down 5.7% and WTM is up 15.5% - WTM leads by 21.2 points.
  • WRB has been more active in the news (15 items in the past 4 weeks vs 13 for WTM).
  • WRB has more recent analyst coverage (25 ratings vs 0 for WTM).
PerformanceWRB-5.73%WTM+15.47%
2025-06-09+0.00%2026-06-05
MetricWRBWTM
Company
W.R. Berkley Corporation
White Mountains Insurance Group Ltd.
Price
$68.56+3.32%
$2066.96+2.70%
Market cap
$25.53B
$5.11B
1M return
+3.73%
-0.25%
1Y return
-5.73%
+15.47%
Industry
Property-Casualty Insurers
Property-Casualty Insurers
Exchange
NYSE
NYSE
IPO
News (4w)
15
13
Recent ratings
25
0
WRB

W.R. Berkley Corporation

W. R. Berkley Corporation, an insurance holding company, operates as a commercial lines writer in the United States and internationally. It operates in two segments, Insurance and Reinsurance & Monoline Excess. The Insurance segment underwrites commercial insurance business, including premises operations, commercial automobile, property, products liability, and general and professional liability lines. It also provides workers' compensation insurance products; accident and health insurance and reinsurance products; insurance for commercial risks; specialty environmental products for contractors, consultants, and property owners and facilities operators; specialized insurance coverages for fine arts and jewelry exposures; umbrella and excess liability coverage products; and liquor liability and inland marine coverage for small to medium-sized insureds. In addition, this segment offers directors and officers, and surety risk products, as well as products for technology, and life sciences and travel industries; cyber risk solutions; casualty, group life, and crime and fidelity related insurance products; personal lines insurance solutions, including home, condo/co-op, auto, and collectibles; automobile, law enforcement, public officials and educator's legal, and employment practices liability, as well as incidental medical insurance products; and at-risk and alternative risk insurance program management services. The Reinsurance & Monoline Excess segment provides other insurance companies and self-insureds with assistance in managing their net risk through reinsurance on a portfolio basis through treaty reinsurance or on an individual basis through facultative reinsurance. W. R. Berkley Corporation was founded in 1967 and is headquartered in Greenwich, Connecticut.

WTM

White Mountains Insurance Group Ltd.

White Mountains Insurance Group, Ltd., through its subsidiaries, provides insurance services in the United States. The company operates through HG Global/BAM, Ark, NSM, Kudu, and Other Operations segments. The HG Global/BAM segment provides insurance on municipal bonds issued to finance public purposes, such as schools, utilities, and transportation facilities, as well as reinsurance protection services. The Ark segment writes a portfolio of reinsurance and insurance, including property, accident and health, energy, marine, and political risks. The NSM segment operates as a general underwriting agency and program administrator for specialty property and casualty insurance to various sectors, such as specialty transportation, real estate, social services, and pet. The Kudu segment provides capital solutions to boutique asset and wealth managers for generational ownership transfers, management buyouts, acquisitions, growth finances, and legacy partner liquidity. The Other Operations segment offers insurance solutions to travel industry through broker channel; and manages separate accounts and pooled investment vehicles for insurance-linked securities sectors, including catastrophe bonds, collateralized reinsurance investments, and industry loss warranties of third-party clients. White Mountains Insurance Group, Ltd. was incorporated in 1980 and is headquartered in Hamilton, Bermuda.

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