Prices via Intrinio. Supplier and customer ties are extracted from SEC filings and carry the sentence they came from. Not investment advice.
Prices via Intrinio. Supplier and customer ties are extracted from SEC filings and carry the sentence they came from. Not investment advice.
Each disclosed tie as a share of both companies’ annual revenue. The bigger share is the side that would feel it if the relationship ended.
| Partner | % of their revenue | % of WTM revenue | Skew |
|---|---|---|---|
| AJGArthur J. Gallagher & Co | 4.27% | 15.20% | 3.6× |
| AONAon plc | 2.83% | 12.40% | 4.4× |
| WTWWillis Towers Watson plc | 1.58% | 4.10% | 2.6× |
Sources
sec edgar · verbatim disclosureEach tie, with the sentence that disclosed it. Open a row for the wording and the filing it came from.
“Marsh & McLennan Companies, Inc. 24.3 % 25.8 % 27.5 %”
$908M relationship
basisWTM fy2025 · closed 2025-12 $3.7B
FILING10-K0001628280-26-012603cik 0000776867
“Arthur J. Gallagher & Co 15.2 12.5 16.9”
$568M relationship3.6× more of WTM’s book than AJG’s
basisWTM fy2025 · closed 2025-12 $3.7BAJG fy2025 · closed 2025-12 $13.3B
FILING10-K0001628280-26-012603
“Aon plc 12.4 13.4 16.7”
$463M relationship4.4× more of WTM’s book than AON’s
basisWTM fy2025 · closed 2025-12 $3.7BAON fy2025 · closed 2025-12 $16.4B
FILING10-K0001628280-26-012603
“Howden Insurance Group 8.7 6.4 4.6”
$325M relationship
basisWTM fy2025 · closed 2025-12 $3.7B
FILING10-K0001628280-26-012603
“Willis Towers Watson plc 4.1 4.9 5.0”
$153M relationship2.6× more of WTM’s book than WTW’s
basisWTM fy2025 · closed 2025-12 $3.7BWTW fy2025 · closed 2025-12 $9.7B
FILING10-K0001628280-26-012603
“FLRT HG Re is a party to the FLRT with BAM, under which HG Re provides first-loss reinsurance protection of up to 15 %-of-par outstanding for each policy assumed from BAM.”
FILING10-K0001628280-26-012603cik 0000776867
“On March 23, 2021, Kudu entered into a secured revolving credit facility (the "Kudu Credit Facility") with Mass Mutual for a maximum borrowing capacity of $ 300.0 million.”
FILING10-K0001628280-26-012603cik 0000776867
“Outrigger Re Ltd. is a Bermuda special purpose insurer and segregated accounts company that provides collateralized reinsurance protection on Ark's Bermuda global property catastrophe excess of loss portfolio.”
FILING10-K0001628280-26-012603cik 0000776867
“10.10 Credit Agreement, dated as of July 16, 2025, among White Mountains Insurance Group, Ltd., the lenders party thereto and Bank of America, N.A., as the administrative agent (incorporated by reference herein to Exhibit 10.1 of the Company's Current Report on Form 8-K dated July 16, 2025)”
FILING10-K0001628280-26-012603cik 0000776867
“In December 2021, Ark entered into an uncommitted secured standby letter of credit facility agreement with Citibank Europe Plc (the "Citibank LOC Facility"), with capacity of $ 125.0 million on a collateralized basis.”
FILING10-K0001628280-26-012603cik 0000776867
“Ark licenses third-party global property catastrophe models from Risk Management Solutions Inc. and Karen Clark & Company, as well as utilizes its own proprietary models to calculate expected probable maximum loss ("PML") estimates from various property and non-property catastrophe scenarios.”
FILING10-K0001628280-26-012603cik 0000776867
“In September 2022, Ark entered into an additional uncommitted standby letter of credit facility agreement with Lloyds Bank Corporate Markets PLC (the "Lloyds LOC Facility"), with capacity of $ 100.0 million on a collateralized basis.”
FILING10-K0001628280-26-012603cik 0000776867
“The attestation report on the effectiveness of White Mountains's internal control over financial reporting by PricewaterhouseCoopers LLP is included on page F- 81 of this report.”
FILING10-K0001628280-26-012603cik 0000776867
“Ark licenses third-party global property catastrophe models from Risk Management Solutions Inc. and Karen Clark & Company, as well as utilizes its own proprietary models to calculate expected probable maximum loss ("PML") estimates from various property and non-property catastrophe scenarios.”
FILING10-K0001628280-26-012603cik 0000776867
“10.5 Paying Agency Agreement dated 13 July 2021 between Group Ark Insurance Limited, The Bank of New York Mellon, London Branch and The Bank of New York Mellon SA/NV, Dublin Branch (incorporated by reference herein to Exhibit 10.2 of the Company's Report on Form 10-Q dated November 8, 2021) (**)”
FILING10-K0001628280-26-012603cik 0000776867
“10.5 Paying Agency Agreement dated 13 July 2021 between Group Ark Insurance Limited, The Bank of New York Mellon, London Branch and The Bank of New York Mellon SA/NV, Dublin Branch (incorporated by reference herein to Exhibit 10.2 of the Company's Report on Form 10-Q dated November 8, 2021) (**)”
FILING10-K0001628280-26-012603cik 0000776867
“10.4 Loan and Security Agreement, dated as of March 31, 2022 among HG Global Ltd., Hudson Structured Capital Management Ltd. and the lenders from time to time party thereto (incorporated by reference herein to Exhibit 10.2 of the Company's Report on Form 10-Q dated May 6, 2022) (**)”
FILING10-K0001628280-26-012603cik 0000776867
“10.9 Fourth Amendment to Loan and Servicing Agreement dated as of July 21, 2025 among Kudu Investment Holdings, LLC, Kudu Investment US, LLC, Kudu Investment Management LLC, KFO Holdings, Ltd., KWCP Holdings UK, Ltd., Massachusetts Mutual Life Insurance Company, Alter Domus (US) LLC, Barings Finance LLC and Barings Direct Investments LLC ( incorporated by reference herein to Exhibit 10. 5 of the Company's Report on Form 10-Q dated August 7, 202 5 )”
FILING10-K0001628280-26-012603cik 0000776867
“10.9 Fourth Amendment to Loan and Servicing Agreement dated as of July 21, 2025 among Kudu Investment Holdings, LLC, Kudu Investment US, LLC, Kudu Investment Management LLC, KFO Holdings, Ltd., KWCP Holdings UK, Ltd., Massachusetts Mutual Life Insurance Company, Alter Domus (US) LLC, Barings Finance LLC and Barings Direct Investments LLC ( incorporated by reference herein to Exhibit 10. 5 of the Company's Report on Form 10-Q dated August 7, 202 5 )”
FILING10-K0001628280-26-012603cik 0000776867
“10.9 Fourth Amendment to Loan and Servicing Agreement dated as of July 21, 2025 among Kudu Investment Holdings, LLC, Kudu Investment US, LLC, Kudu Investment Management LLC, KFO Holdings, Ltd., KWCP Holdings UK, Ltd., Massachusetts Mutual Life Insurance Company, Alter Domus (US) LLC, Barings Finance LLC and Barings Direct Investments LLC ( incorporated by reference herein to Exhibit 10. 5 of the Company's Report on Form 10-Q dated August 7, 202 5 )”
FILING10-K0001628280-26-012603cik 0000776867
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Prev close 2,040.09 · gapped above the open, then crossed back over prior close. High/low 2,066.00 at 5:15 am ET, 2,031.05 at 12:45 pm ET.
White Mountains Insurance Group Ltd
Price, suppliers and customers from SEC filings, institutional ownership and the next report.
NYSE · Fire, Marine & Casualty Insurance
White Mountains Insurance Group Ltd has 19 disclosed suppliers and 1 disclosed customer. Each one is named in an SEC filing, either White Mountains Insurance Group Ltd’s own annual report or the counterparty’s, and carries the sentence that discloses it.
WTM (White Mountains Insurance Group Ltd) has 19 disclosed suppliers and 1 disclosed customers, strongest disclosure first.
Suppliers:
Customers:
Select a tie for the filing sentence that discloses it; select again to open the company. Lines are disclosed suppliers and customers, coloured by industry; the closer to the centre, the more the filings disclose. A dot is green or red by today’s move, and a bundle sits past the rings until you open it. Extended: satellites hang off single companies, not bundled sectors.
Largest move on the map today: AJG +1.37%, in the finance bundle.