0001104659-24-019920.txt : 20240213 0001104659-24-019920.hdr.sgml : 20240213 20240213162207 ACCESSION NUMBER: 0001104659-24-019920 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20231231 FILED AS OF DATE: 20240213 DATE AS OF CHANGE: 20240213 EFFECTIVENESS DATE: 20240213 FILER: COMPANY DATA: COMPANY CONFORMED NAME: WHITE MOUNTAINS INSURANCE GROUP LTD CENTRAL INDEX KEY: 0000776867 STANDARD INDUSTRIAL CLASSIFICATION: FIRE, MARINE & CASUALTY INSURANCE [6331] ORGANIZATION NAME: 02 Finance IRS NUMBER: 942708455 STATE OF INCORPORATION: D0 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-01681 FILM NUMBER: 24626342 BUSINESS ADDRESS: STREET 1: 23 SOUTH MAIN STREET STREET 2: SUITE 3B CITY: HANOVER STATE: NH ZIP: 03755 BUSINESS PHONE: 603 640 2200 MAIL ADDRESS: STREET 1: 23 SOUTH MAIN STREET STREET 2: SUITE 3B CITY: HANOVER STATE: NH ZIP: 03755 FORMER COMPANY: FORMER CONFORMED NAME: WHITE MOUNTAINS INSURANCE GROUP INC DATE OF NAME CHANGE: 19990603 FORMER COMPANY: FORMER CONFORMED NAME: FUND AMERICAN ENTERPRISES HOLDINGS INC DATE OF NAME CHANGE: 19920703 FORMER COMPANY: FORMER CONFORMED NAME: FUND AMERICAN COMPANIES INC DATE OF NAME CHANGE: 19920701 13F-HR 1 primary_doc.xml X0202 13F-HR LIVE false false false 0000776867 XXXXXXXX 12-31-2023 12-31-2023 false WHITE MOUNTAINS INSURANCE GROUP LTD

23 South Main Street Suite 3B Hanover NH 03755

13F HOLDINGS REPORT 028-01681 N Michaela J. Hildreth 603-640-2200 /s/ Michaela J. Hildreth Boston MA 02-13-2024 0 2 392620178 INFORMATION TABLE 2 infotable.xml MEDIAALPHA INC CL A 58450V104 BBG00XRTJ7K6 254853476 22856814 SH SOLE 22856814 0 0 SPDR S&P 500 ETF TR TR UNIT 78462F103 BBG000BDTBL9 137766702 289846 SH SOLE 289846 0 0