{"filings":[{"id":2503036,"accession_number":"0001628280-26-059191","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2026-08-27T12:11:33+00:00","items":["5.02","9.01"],"status":"ready","headline":"White Mountains elects Stephen Klar to board; board expands to 11","summary_kind":"llm","event_type":"leadership","confidence":"high","bullets":["Stephen Klar elected director on Aug 26, 2026; board size increased from 10 to 11.","Klar is former President and Managing Partner of Wellington Management Group LLP.","Will serve until next annual meeting; receives standard non-employee director compensation.","CEO Liam Caffrey cited Klar's financial services experience as beneficial to owners."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":2088636,"accession_number":"0001628280-26-053913","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2026-08-06T12:14:20+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q2 book value per share up 4% to $2,258; Ark combined ratio 84%","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Book value per share $2,258, up 4% in Q2; comprehensive income $199M.","Ark combined ratio 84% in Q2; gross written premiums $778M, down 5% YoY due to property softening.","Kudu Q2 total revenues $69M, pre-tax income $57M, adjusted EBITDA $16M; trailing 12-month ROE 15%.","HG Global refinanced senior debt to $200M at 7.4% fixed; paid $93M dividend ($90M to White Mountains).","Repurchased 91,194 shares for $191M at avg $2,092.72 (93% of book value); undeployed capital ~$0.8B."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":870796,"accession_number":"0001628280-26-041051","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2026-06-05T12:17:36+00:00","items":["7.01","9.01"],"status":"ready","headline":"White Mountains holds annual investor meeting; no material financial details in 8-K filing","summary_kind":"llm","event_type":"other_material","confidence":"low","bullets":["Filing reports use of investor presentation at June 5, 2026 Annual Investor Information Meeting.","Exhibit 99.1 is the presentation; its content was not included in the public filing text.","No specific financial data, guidance, or strategic changes are disclosed in this 8-K."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.1,"calibrated_materiality_score":0.1,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":582397,"accession_number":"0001628280-26-037284","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2026-05-21T20:21:13+00:00","items":["5.02","5.07","9.01"],"status":"ready","headline":"White Mountains director Steven Yi not re-elected; annual meeting votes approve compensation and auditor","summary_kind":"llm","event_type":"other_material","confidence":"high","bullets":["Steven M. Yi did not stand for re-election; term ended May 21, 2026.","Four Class II directors elected to terms ending 2029: Caffrey, Choksi, Chu, Hicks.","Advisory say-on-pay approved with 98% of votes cast (1,993,894 for).","Appointment of PwC as auditor for 2026 ratified with 2,186,203 votes for."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":453357,"accession_number":"0001628280-26-035349","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2026-05-15T13:02:53+00:00","items":["1.01","2.03","9.01"],"status":"ready","headline":"White Mountains' HG Global unit issues $200M 7.39% senior notes due 2036","summary_kind":"llm","event_type":"debt","confidence":"high","bullets":["Net proceeds will repay $150M existing term loan (9.93% floating), pay fees, and fund a dividend to White Mountains.","New notes bear fixed 7.39% interest, mature May 14, 2036, secured by collateral.","Debt refinancing reduces interest cost; fixed rate provides predictable expense.","Transaction closed May 14, 2026; notes placed privately with institutional purchasers."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.65,"calibrated_materiality_score":0.65,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":98791,"accession_number":"0001628280-26-030930","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2026-05-06T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q1 book value per share down 1% to $2,170; comprehensive loss $27M","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Book value per share $2,170, down 0.8% in quarter; comprehensive loss $(27)M vs $35M income a year ago.","Ark/WM Outrigger combined ratio improved to 91% from 97%; Ark's 91% includes 7 pts catastrophe losses from Iran war.","Kudu adjusted EBITDA $17M, trailing 12-mo ROE 12%; HG Global gross written premiums up 24% to $8M.","MediaAlpha carrying value fell to $166M from $231M at year-end due to share price drop to $9.30.","Deployed $125M into Bishop Street Underwriters; two WTM Partner acquisitions in Q2 (BaseSix ~$97M, Hawkeye ~$35M)."],"consensus_eps_estimate":null,"consensus_eps_actual":-12.59,"consensus_revenue_estimate":null,"consensus_revenue_actual":517800000.0,"consensus_period":"2026-Q1","consensus_source":"xbrl_only","sentiment":"negative","materiality_score":0.8,"calibrated_materiality_score":0.8,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":98790,"accession_number":"0001628280-26-022818","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2026-04-01T23:59:59+00:00","items":["8.01","9.01"],"status":"ready","headline":"White Mountains acquires majority stake in BaseSix for ~$97M","summary_kind":"llm","event_type":"m_and_a","confidence":"high","bullets":["White Mountains Partners completed acquisition of majority interest in BaseSix Systems for ~$97 million equity investment.","BaseSix founded 2018, HQ Marietta, GA; provides design, install, retrofit, maintenance of low voltage building systems.","Company achieved organic growth; plans new offices and strategic acquisitions with WMP backing.","Co-founders Robb Borden (CEO) and Chris Atwell remain; advisors Morgan Lewis, Deloitte, Miller & Martin."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.6,"calibrated_materiality_score":0.6,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":114462,"accession_number":"0001628280-26-012417","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2026-02-26T23:59:59+00:00","items":["8.01","9.01"],"status":"ready","headline":"White Mountains invests $125M in Bishop Street MGA platform","summary_kind":"llm","event_type":"other_material","confidence":"high","bullets":["White Mountains completed a $125M structured capital investment into Bishop Street Underwriters.","Bishop Street is a RedBird Capital portfolio company and a diversified MGA platform.","Bishop Street reported 2025 GWP exceeding $650M with a sub-50% portfolio loss ratio.","White Mountains executives will join Bishop Street's board to support growth and M&A.","Investment aims to accelerate Bishop Street's global footprint and organic expansion."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.65,"calibrated_materiality_score":0.65,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":114461,"accession_number":"0001628280-26-005947","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2026-02-06T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q4 BVPS +18%, full-year +25%; Bamboo sale adds ~$320","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Book value per share $2,188 at Dec 31, 2025, up 18% QoQ and 25% YoY including dividends.","Comprehensive income $837M in Q4 and $1,109M full-year 2025 vs. losses of $131M and $230M in prior year.","Ark combined ratio 79% Q4 (10 pts cat) and 83% full-year; GWP +16% to $2.6B.","Closed sale of Bamboo to CVC for net cash $848M; retained 15% equity stake valued at $250M.","Repurchased ~$190M of shares in Q4 via open market and self-tender; undeployed capital ~$1.0B."],"consensus_eps_estimate":null,"consensus_eps_actual":430.14,"consensus_revenue_estimate":null,"consensus_revenue_actual":3735000000.0,"consensus_period":"2025-FY","consensus_source":"xbrl_only","sentiment":"positive","materiality_score":0.8,"calibrated_materiality_score":0.8,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":114460,"accession_number":"0001628280-26-001102","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2026-01-07T23:59:59+00:00","items":["8.01"],"status":"ready","headline":"Ark Insurance renews Outrigger sidecar with $70M third-party capital for 2026","summary_kind":"llm","event_type":"other_material","confidence":"high","bullets":["Outrigger Re Ltd. renewed for 2026 on similar terms as 2025; deployed $70M total investor capital from third-party investors.","Capital reduction driven by Ark's increased use of traditional quota share reinsurance for 2026.","The sidecar provides collateralized reinsurance on a portion of Ark Bermuda's global property catastrophe portfolio."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":130836,"accession_number":"0001628280-25-055702","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-12-08T23:59:59+00:00","items":["2.01","8.01","9.01"],"status":"ready","headline":"White Mountains completes sale of controlling Bamboo stake to CVC for $848M net cash","summary_kind":"llm","event_type":"m_and_a","confidence":"high","bullets":["Sold 77.3% equity interest in Bamboo Group for $848M net cash proceeds at closing on Dec 5, 2025.","Retained indirect equity interest valued at $250M (approx 15% fully-diluted stake).","Bamboo enterprise value on a cash-free/debt-free basis was $1.75B.","Pro forma net transaction gain after tax estimated at $816.6M, increasing book value by $844.6M.","Net proceeds include $3.6M held in escrow expected release in H1 2026."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.7,"calibrated_materiality_score":0.7,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":130835,"accession_number":"0001628280-25-049888","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-11-06T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q3 BVPS $1,851 (+3%); sells 77% of Bamboo to CVC for ~$325/share boost","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Book value per share $1,851, up 3% in Q3 and 6% YTD including dividends; pro-forma BVPS $2,176 after Bamboo sale.","Ark combined ratio 76% in Q3 (vs 79% prior year); gross written premiums $2.3B YTD, up 18%.","Bamboo sale to CVC: White Mountains sells ~77% stake; expected Q4 close adds ~$325 to BVPS.","Kudu pre-tax income $44M, adjusted EBITDA $15M; trailing 12-month ROE 9%.","Distinguished acquired for $224M cash on Sep 2; contributed $1M ScaleCo adjusted EBITDA in stub period."],"consensus_eps_estimate":null,"consensus_eps_actual":105.18,"consensus_revenue_estimate":null,"consensus_revenue_actual":2131200000.0,"consensus_period":"2025-Q3","consensus_source":"xbrl_only","sentiment":"positive","materiality_score":0.85,"calibrated_materiality_score":0.85,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":130834,"accession_number":"0001628280-25-044062","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-10-03T23:59:59+00:00","items":["1.01","9.01"],"status":"ready","headline":"White Mountains sells ~77% of Bamboo to CVC at $1.75B enterprise value","summary_kind":"llm","event_type":"m_and_a","confidence":"high","bullets":["White Mountains will sell ~77% equity interest in Bamboo to CVC, retaining ~15% fully-diluted stake.","Transaction values Bamboo at $1.75 billion enterprise value; net cash proceeds expected ~$840M.","White Mountains expects a gain of approximately $310 per share to book value from the sale.","Closing expected Q4 2025, subject to regulatory approvals; no shareholder vote required."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.85,"calibrated_materiality_score":0.85,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":147405,"accession_number":"0000776867-25-000016","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-09-03T23:59:59+00:00","items":["8.01"],"status":"ready","headline":"White Mountains closes $224M acquisition of 50% of Distinguished Programs, now holds 51% control","summary_kind":"llm","event_type":"m_and_a","confidence":"high","bullets":["Closed acquisition of 50% of AQ Phoenix Parent, L.P. (Distinguished Programs) for $224M in cash on Sept. 2, 2025.","Combined with existing ~1% interest, White Mountains now owns a 51% controlling interest in Distinguished Programs.","Transaction closed via indirect wholly owned subsidiaries WM Monroe Holdings, Inc. and WM Phoenix GP, LLC.","No additional financing or regulatory conditions disclosed post-closing."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":147404,"accession_number":"0000776867-25-000015","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-09-02T23:59:59+00:00","items":["5.02","9.01"],"status":"ready","headline":"White Mountains CEO Manning Rountree to retire Dec 31, 2025; Liam Caffrey to succeed","summary_kind":"llm","event_type":"leadership","confidence":"high","bullets":["Manning Rountree to retire as CEO and board member on Dec 31, 2025; becomes Senior Advisor through Jan 1, 2028.","Liam Caffrey, currently President and CFO, becomes CEO on Jan 1, 2026 and joins the board.","Michael Papamichael succeeds Caffrey as CFO; Giles Harrison becomes President, both effective Jan 1, 2026.","Rountree to receive $600K cash bonus for 2025 plus $300K annual salary as Senior Advisor; remains eligible for LTIP.","Board Compensation Committee approved letter agreement with Rountree including restrictive covenants and mutual release."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":147403,"accession_number":"0000776867-25-000013","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-08-07T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q2 BVPS +3% to $1,804; Ark combined ratio 84%, Bamboo record quarter","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["BVPS $1,804 (+3% for Q2 and H1); comprehensive income $124M vs -$55M prior year.","Ark combined ratio 84% (improved from 87%); GWP $815M (+17% YoY).","Bamboo MGA pre-tax $15M, MGA adj. EBITDA $26M; managed premiums $191M (+59% YoY).","HG Global GWP $19M (record Q2, +66% YoY); Kudu adj. EBITDA $16M, ROE 8%.","Completed BroadStreet deal, announced Distinguished acquisition; undeployed capital ~$300M."],"consensus_eps_estimate":null,"consensus_eps_actual":60.99,"consensus_revenue_estimate":null,"consensus_revenue_actual":1267000000.0,"consensus_period":"2025-Q2","consensus_source":"xbrl_only","sentiment":"positive","materiality_score":0.7,"calibrated_materiality_score":0.7,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":147402,"accession_number":"0000776867-25-000012","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-07-18T23:59:59+00:00","items":["8.01","9.01"],"status":"ready","headline":"White Mountains closes $150M strategic investment in BroadStreet Partners","summary_kind":"llm","event_type":"other_material","confidence":"high","bullets":["White Mountains invested $150M in BroadStreet as part of a group led by Ethos Capital, BCI, and T. Rowe Price.","Ontario Teachers' retains a significant co-control stake and continues partnership with the Ethos-led group.","BroadStreet is a middle-market insurance brokerage offering commercial and personal P&C and employee benefits solutions.","Investment aims to support BroadStreet's Core Agency Partners with M&A, capital solutions, and digital transformation tools."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":147401,"accession_number":"0000776867-25-000011","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-07-16T23:59:59+00:00","items":["8.01","9.01"],"status":"ready","headline":"White Mountains enters $250M senior unsecured revolver, undrawn at close","summary_kind":"llm","event_type":"debt","confidence":"high","bullets":["Established $250M senior unsecured revolving credit facility, fully undrawn as of July 16, 2025.","Facility matures July 16, 2028; interest on SOFR loans at 1.10%-1.50% plus SOFR (with 0.10% credit spread adjustment).","Financial covenants require minimum Consolidated Net Worth and Debt to Cap Ratio not exceeding 32.5%.","Joint lead arrangers: BofA Securities and Barclays Bank PLC; Bank of America acts as administrative agent.","Company states no current plans to draw on the facility; fees range from 0.15% to 0.25% per annum."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":147400,"accession_number":"0000776867-25-000009","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-07-07T23:59:59+00:00","items":["1.01","9.01"],"status":"ready","headline":"White Mountains acquires 51% controlling interest in Distinguished Programs for $230M","summary_kind":"llm","event_type":"m_and_a","confidence":"high","bullets":["Acquisition includes existing ~1% interest; total cash consideration ~$230M for 51% controlling stake.","Distinguished places >$550M in annual premium across 12 specialty P&C programs (real estate, cyber, surety, etc.).","Current management (Bill Malloy, Jason Rotman, Steve Sitterly) to remain as significant equityholders.","Sellers can sell additional 29% units 3 years after close for ~$130M; White Mountains has parallel call at 1.35x price.","Expected close Q3 2025, subject to regulatory approvals; no financing condition or shareholder vote required."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":166031,"accession_number":"0000776867-25-000008","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-06-06T23:59:59+00:00","items":["7.01","9.01"],"status":"ready","headline":"White Mountains files investor presentation for annual meeting; no specifics in exhibit text","summary_kind":"llm","event_type":"other","confidence":"low","bullets":["White Mountains held its Annual Investor Information Meeting on June 6, 2025.","Exhibit 99.1 is titled '2025 Annual Investor Presentation'; full content not included in filing excerpt.","No new financial data, guidance, or strategic updates are discernible from the provided text alone.","Investors should consult the full presentation for any material disclosures."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":166030,"accession_number":"0000776867-25-000007","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-05-22T23:59:59+00:00","items":["5.07"],"status":"ready","headline":"White Mountains shareholders approve all proposals at 2025 AGM, elect directors","summary_kind":"llm","event_type":"other","confidence":"high","bullets":["Elected Class I directors Reid T. Campbell, Peter M. Carlson, Suzanne F. Shank to terms ending 2028.","Advisory vote on executive compensation passed with 98% support (2,089,683 for).","Amended and restated long-term incentive plan approved with 98% support (2,106,536 for).","Ratified PwC as independent auditor for 2025 with 96.8% support (2,337,137 for)."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.15,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":166029,"accession_number":"0000776867-25-000005","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-05-07T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q1 book value per share $1,752 (+0.4%); Ark combined ratio 94%, gross premiums up 27%","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Comprehensive income $35M vs $236M prior year; MediaAlpha unrealized loss $37M vs gain $211M.","Ark gross written premiums $1,108M (+27% YoY); combined ratio 94% includes $75M California wildfire losses.","Bamboo MGA adjusted EBITDA $20M (3x YoY); managed premiums $147M (+63%); $160M wildfire losses within reinsurance.","Kudu adjusted EBITDA $16M (+14% YoY); trailing 12-month ROE 13%; completed Homestead farmland investment.","Total consolidated portfolio return ex-MediaAlpha 2.3% vs 1.2% prior year; undeployed capital ~$550M after April deployments."],"consensus_eps_estimate":-14.14,"consensus_eps_actual":13.19,"consensus_revenue_estimate":null,"consensus_revenue_actual":577800000.0,"consensus_period":"2025-Q1","consensus_source":"xbrl+finnhub","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":166028,"accession_number":"0000776867-25-000004","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-04-10T23:59:59+00:00","items":["8.01","9.01"],"status":"ready","headline":"White Mountains invests $150M alongside Ethos Capital and BCI in BroadStreet Partners","summary_kind":"llm","event_type":"m_and_a","confidence":"high","bullets":["White Mountains to invest $150M as co-lead investor with Ethos Capital and BCI for ownership stake in BroadStreet.","BroadStreet is a leading North American insurance brokerage with co-ownership model across 30 Core Agency Partners.","Ontario Teachers' Pension Plan retains significant co-control stake and continues as partner.","Investment supports BroadStreet's technology and digital transformation initiatives.","BroadStreet operates in all 50 U.S. states and 10 Canadian provinces."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.6,"calibrated_materiality_score":0.6,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":183563,"accession_number":"0000776867-25-000002","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-02-07T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q4 ABVPS down 3% on $122M MediaAlpha loss; full-year ABVPS up 8%","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Adjusted book value per share $1,834 at Dec 31, 2024, down 3% QoQ; full-year gain 8% including dividends.","Comprehensive loss attributable to common shareholders $131M in Q4 2024 vs $288M income in Q4 2023.","Ark combined ratio 77% in Q4; gross written premiums $264M (+14% YoY); Kudu portfolio exceeds $1B.","Bamboo managed premiums doubled to $484M; MGA adjusted EBITDA $53M, up seven-fold YoY.","MediaAlpha share price fell 38% to $11.29; $122M mark-to-market loss. Undeployed capital ~$700M."],"consensus_eps_estimate":-33.33,"consensus_eps_actual":89.79,"consensus_revenue_estimate":null,"consensus_revenue_actual":2239800000.0,"consensus_period":"2024-FY","consensus_source":"xbrl+finnhub","sentiment":"negative","materiality_score":0.8,"calibrated_materiality_score":0.8,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":183562,"accession_number":"0000776867-25-000001","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2025-01-08T23:59:59+00:00","items":["8.01"],"status":"ready","headline":"White Mountains renews Outrigger Re sidecar with $230M total capital for 2025","summary_kind":"llm","event_type":"other_material","confidence":"high","bullets":["Outrigger Re renewed on similar terms as 2024; quota share with Ark on global property catastrophe portfolio starting Jan 1, 2025.","Total investor capital of $230M for Jan 1, 2025 renewals; White Mountains contributed $150M.","Remaining $80M from continuing third-party investors; sidecar provides collateralized reinsurance protection.","White Mountains is parent of Ark Insurance Holdings, the specialty P&C reinsurance subsidiary."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":200145,"accession_number":"0000776867-24-000018","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2024-11-06T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q3 ABVPS up 6% to $1,883; Ark combined ratio improves to 79%","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Adjusted book value per share of $1,883, up 6% in Q3 and 11% YTD including dividends.","Ark reported combined ratio of 79% (vs 81% prior year) and GWP of $374M (+49% YoY).","BAM deconsolidation effective July 1; surplus notes fair valued at $411M, causing $99M pre-tax unrealized loss.","Bamboo managed premiums doubled to $148M; MGA adjusted EBITDA hit record $19M.","MediaAlpha share price up 38% to $18.11; contributed $88M unrealized gain in Q3."],"consensus_eps_estimate":99.99,"consensus_eps_actual":140.66,"consensus_revenue_estimate":null,"consensus_revenue_actual":1881800000.0,"consensus_period":"2024-Q3","consensus_source":"xbrl+finnhub","sentiment":"positive","materiality_score":0.85,"calibrated_materiality_score":0.85,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":216164,"accession_number":"0000776867-24-000014","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2024-08-07T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q2 ABVPS down 1% on MediaAlpha loss; operating units post solid growth","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["ABVPS down 1% to $1,777; comprehensive loss $55M vs $21M profit a year ago.","MediaAlpha share price fell 35%, causing $139M net loss; ownership now 27%.","Ark combined ratio 89%; gross written premiums up 15% to $697M.","Bamboo managed premiums tripled to $120M; MGA adjusted EBITDA record $12M.","Kudu trailing 12-month adjusted EBITDA $60M; undeployed capital ~$650M."],"consensus_eps_estimate":null,"consensus_eps_actual":70.93,"consensus_revenue_estimate":null,"consensus_revenue_actual":1042700000.0,"consensus_period":"2024-Q2","consensus_source":"xbrl_only","sentiment":"neutral","materiality_score":0.75,"calibrated_materiality_score":0.75,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":235698,"accession_number":"0000776867-24-000013","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2024-06-07T23:59:59+00:00","items":["7.01","9.01"],"status":"ready","headline":"White Mountains holds annual investor meeting; presentation filed without specific new disclosures","summary_kind":"llm","event_type":"other","confidence":"low","bullets":["White Mountains held its 2024 Annual Investor Information Meeting on June 7, 2024.","A presentation was furnished; no financial results, guidance, or operational updates were provided.","No material changes to dividend, capital structure, or management were disclosed."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.1,"calibrated_materiality_score":0.1,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":235697,"accession_number":"0000776867-24-000011","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2024-05-23T23:59:59+00:00","items":["5.07"],"status":"ready","headline":"White Mountains holds 2024 AGM; all director nominees and proposals approved","summary_kind":"llm","event_type":"other_material","confidence":"high","bullets":["2,565,733 common shares outstanding and eligible to vote as of April 1, 2024 record date.","All four director nominees elected: Reid Campbell, Margaret Dillon, Philip Gelston, David Tanner.","Advisory vote on executive compensation passed with 94% support (1,981,167 votes FOR).","PricewaterhouseCoopers ratified as independent auditor for 2024 with 2,313,759 votes FOR."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.15,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":235696,"accession_number":"0000776867-24-000009","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2024-05-09T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q1 ABVPS up 6% to $1,797; MediaAlpha gain $211M","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Comprehensive income $236M vs $180M YoY; driven by $211M MediaAlpha unrealized gains.","Ark combined ratio 94%; gross written premiums $872M (+8% YoY).","Bamboo managed premiums $90M (3x YoY); MGA adj. EBITDA $6M.","BAM insured $3.6B municipal bonds (+24% YoY); gross premiums $22M.","Kudu adj. EBITDA $14M; trailing 12-month net investment income up 4% QoQ."],"consensus_eps_estimate":null,"consensus_eps_actual":92.33,"consensus_revenue_estimate":null,"consensus_revenue_actual":647300000.0,"consensus_period":"2024-Q1","consensus_source":"xbrl_only","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":235695,"accession_number":"0000776867-24-000006","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2024-04-10T23:59:59+00:00","items":["5.02","9.01"],"status":"ready","headline":"White Mountains appoints Giles Harrison EVP/CSO, Liam Caffrey named President","summary_kind":"llm","event_type":"leadership","confidence":"high","bullets":["Giles Harrison to become EVP & Chief Strategy Officer on June 10, 2024.","Harrison previously CFO of Farmers Group, Inc.; 20 years insurance investment banking experience.","Harrison's compensation: $600k salary, 75% bonus target, $750k signing bonus (3 annual installments).","Liam Caffrey named President, will continue as CFO; compensation unchanged."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":253459,"accession_number":"0000776867-24-000004","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2024-02-23T23:59:59+00:00","items":["5.02","9.01"],"status":"ready","headline":"Reid T. Campbell elected to White Mountains board after retiring as President","summary_kind":"llm","event_type":"leadership","confidence":"high","bullets":["Board size increased from 9 to 10 with election of Reid T. Campbell as director on Feb 22, 2024.","Campbell retired as President after 30 years; retirement previously disclosed, not due to disagreement.","He will receive standard non-employee director compensation including pro-rated retainer and grant for 2024.","Campbell had served as CFO and most recently President over his 30-year career at the company."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":253458,"accession_number":"0000776867-24-000003","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2024-02-07T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains reports Q4 2023 ABVPS up 7% to $1,704; full-year ABVPS up 14%","summary_kind":"llm","event_type":"other_material","confidence":"high","bullets":["Comprehensive income attributable to common shareholders: $288M Q4, $511M full year 2023.","BAM gross written premiums and MSC: $48M Q4, $131M full year; par insured $5.1B Q4.","Ark combined ratio 70% Q4 and 82% full year; gross written premiums up 31% YoY.","Kudu adjusted EBITDA $22M Q4, $57M full year; net investment income up 31% YoY.","Bermuda 15% corporate income tax enacted Dec 2023; White Mountains exempt until 2030, recorded $68M deferred tax benefit."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":253457,"accession_number":"0000776867-24-000002","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2024-01-03T23:59:59+00:00","items":["8.01"],"status":"ready","headline":"White Mountains closes acquisition of 72.8% of Bamboo IDE8 for $296.7M","summary_kind":"llm","event_type":"m_and_a","confidence":"high","bullets":["Closed merger and primary investment in Bamboo IDE8 Insurance Services on January 2, 2024.","Acquired approximately 72.8% of Bamboo's equity for $296.7 million in cash.","Transaction completed through indirect subsidiaries PM Holdings and WM Pierce Merger Sub.","Bamboo becomes a consolidated subsidiary of White Mountains."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":270925,"accession_number":"0000776867-23-000018","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2023-12-21T23:59:59+00:00","items":["8.01","9.01"],"status":"ready","headline":"White Mountains renews $250M Outrigger Re sidecar; WTM commits $130M for 2024","summary_kind":"llm","event_type":"other_material","confidence":"high","bullets":["Outrigger Re Ltd. renewed on similar terms as 2023 for Ark's global property catastrophe portfolio starting Jan 1, 2024.","Total investor capital: $250M, including $130M from White Mountains and remaining from new/continuing third-party investors.","Management cites new investor interest as recognition of Ark's strong execution in the ongoing hard market."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.65,"calibrated_materiality_score":0.65,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":270924,"accession_number":"0000776867-23-000016","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2023-11-06T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q3 ABVPS up 1% to $1,588; acquires Bamboo, launches WM Partners","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Book value per share $1,542, adjusted $1,588, both up 1% in Q3 and 6% YTD including dividends.","BAM gross written premiums & MSC $36M in Q3 vs $46M a year ago; Ark combined ratio 81% (87% year ago).","WM Outrigger Re combined ratio 44%, pre-tax income $37M; Kudu annualized adjusted EBITDA grew to $47M.","MediaAlpha share price decline reduced ABVPS by 1%; carrying value $189M vs $236M at June 30.","Announced acquisition of Bamboo and launch of WM Partners; undeployed capital roughly $400M."],"consensus_eps_estimate":null,"consensus_eps_actual":86.82,"consensus_revenue_estimate":null,"consensus_revenue_actual":1429900000.0,"consensus_period":"2023-Q3","consensus_source":"xbrl_only","sentiment":"neutral","materiality_score":0.8,"calibrated_materiality_score":0.8,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":270923,"accession_number":"0000776867-23-000014","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2023-10-20T23:59:59+00:00","items":["1.01","9.01"],"status":"ready","headline":"White Mountains to acquire ~70% of Bamboo for ~$285M; California homeowners MGA","summary_kind":"llm","event_type":"m_and_a","confidence":"high","bullets":["White Mountains to invest approx. $285M for ~70% of Bamboo, a California homeowner MGA.","Bamboo insures over 100,000 California policyholders; founded in 2018 by John Chu.","John Chu and current management will continue leading the business with a significant equity stake.","Transaction expected to close Q1 2024, subject to regulatory approvals; no financing condition.","White Mountains' final ownership could range from 62% to 81% based on unitholder rollovers."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":287822,"accession_number":"0000776867-23-000012","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2023-08-07T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains reports 1% ABVPS increase in Q2; Ark GWP up 50% YoY","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Book value per share $1,532; adjusted book value per share $1,576 as of June 30, 2023.","Ark combined ratio 89%; gross written premiums $606M (+50% YoY); risk-adjusted rate change +21%.","MediaAlpha share price decline reduced ABVPS by 2%; tender offer for 5.9M shares at $10.00 completed.","BAM gross written premiums & MSC down to $26M in Q2 from $41M last year; pricing up to 77 bps.","Total consolidated portfolio return excluding MediaAlpha: 3.0%; repurchased 5,542 shares for $7M."],"consensus_eps_estimate":null,"consensus_eps_actual":77.57,"consensus_revenue_estimate":null,"consensus_revenue_actual":910300000.0,"consensus_period":"2023-Q2","consensus_source":"xbrl_only","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":308148,"accession_number":"0000776867-23-000010","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2023-06-06T23:59:59+00:00","items":["7.01","9.01"],"status":"ready","headline":"White Mountains holds annual investor meeting; presentation furnished without specific material updates","summary_kind":"llm","event_type":"other_material","confidence":"low","bullets":["White Mountains Insurance Group held its Annual Investor Information Meeting on June 6, 2023.","A presentation was furnished as Exhibit 99.1 via this 8-K, but its detailed content is not available in the extracted text.","No specific financial results, guidance changes, or other material events were disclosed in the filing itself.","The meeting is a regularly scheduled update; no unexpected announcements were apparent from the furnished materials."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":308147,"accession_number":"0000776867-23-000009","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2023-05-25T23:59:59+00:00","items":["5.07"],"status":"ready","headline":"White Mountains Insurance Group reports 2023 AGM voting results; directors elected, say-on-pay approved at 82%","summary_kind":"llm","event_type":"other","confidence":"high","bullets":["All four Class II directors (Rountree, Choksi, Hicks, Yi) elected with over 2M votes for each.","Advisory say-on-pay resolution passed with 82% of votes cast in favor (1,678,679 for, 366,511 against).","Frequency of future say-on-pay votes set at 1 year (1,865,055 votes for 1-year option).","PricewaterhouseCoopers LLP ratified as independent auditor for 2023 with 2,328,275 votes for, 29,147 against."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.15,"calibrated_materiality_score":0.15,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":308146,"accession_number":"0000776867-23-000008","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2023-05-25T23:59:59+00:00","items":["5.02","9.01"],"status":"ready","headline":"White Mountains elects Weston M. Hicks Chairman; Morgan Davis retires from Board","summary_kind":"llm","event_type":"leadership","confidence":"high","bullets":["Weston M. Hicks elected Chairman of the Board, effective May 25, 2023.","Morgan W. Davis retired from the Board; retirement not due to any disagreement.","Davis served as Chairman for 6 years and as director for 17 years.","CEO Manning Rountree expressed gratitude for Davis's mentorship over 20 years."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":308145,"accession_number":"0000776867-23-000005","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2023-05-09T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q1 ABVPS up 5% to $1,567; Ark combined ratio 94%, GWP up 28%","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Comprehensive income attributable to common shareholders $180M vs $31M in Q1 2022.","Ark gross written premiums $809M (+28% YoY); combined ratio 94% (vs 100% Q1 2022).","Kudu adjusted EBITDA $11M; annualized adjusted EBITDA $37M; new deployment closed.","MediaAlpha investment value $254M, up from $169M at year-end; $85M mark-to-market gain.","Repurchased 18,623 shares for $25M at avg $1,360.30 (87% of ABVPS)."],"consensus_eps_estimate":null,"consensus_eps_actual":69.83,"consensus_revenue_estimate":null,"consensus_revenue_actual":531900000.0,"consensus_period":"2023-Q1","consensus_source":"xbrl_only","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":327025,"accession_number":"0000776867-23-000003","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2023-02-23T23:59:59+00:00","items":["5.02","9.01"],"status":"ready","headline":"White Mountains elects former Alleghany CEO Weston M. Hicks to board","summary_kind":"llm","event_type":"leadership","confidence":"high","bullets":["Weston M. Hicks elected to White Mountains board effective Feb 22, 2023; board expands from 8 to 9 members.","Hicks was formerly President and CEO of Alleghany Corporation and served on its board.","He will serve until the next annual meeting and receive standard non-employee director compensation.","CEO Manning Rountree commented that Hicks' insurance industry experience will benefit owners."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":327024,"accession_number":"0000776867-23-000001","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2023-02-07T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q4 ABVPS up 2% to $1,495; full-year ABVPS +26%","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Comprehensive income $40M in Q4, $788M for full year 2022, driven by NSM sale gain of $876M.","Ark GAAP combined ratio 59% in Q4, 82% full year; gross written premiums up 37% YoY to $1.45B.","BAM gross written premiums & MSC $38M in Q4, $147M for full year; claims-paying resources $1.42B.","Kudu adjusted EBITDA $9M in Q4, $42M full year (+27% YoY); deployed $713M across 20 firms.","Launched Outrigger Re with $205M capital; repurchased 4,076 shares for $5M in Q4."],"consensus_eps_estimate":null,"consensus_eps_actual":276.96,"consensus_revenue_estimate":null,"consensus_revenue_actual":1157900000.0,"consensus_period":"2022-FY","consensus_source":"xbrl_only","sentiment":"positive","materiality_score":0.8,"calibrated_materiality_score":0.8,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":344753,"accession_number":"0000776867-22-000017","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2022-12-21T23:59:59+00:00","items":["8.01"],"status":"ready","headline":"White Mountains leads $250M reinsurance sidecar Outrigger Re for Ark","summary_kind":"llm","event_type":"other_material","confidence":"high","bullets":["Outrigger Re Ltd. formed as a Bermuda special purpose insurer with $250M total capital.","White Mountains contributes $205M; Aquiline Capital and Enstar (ESGR) join as investors.","Sidecar provides quota-share reinsurance on Ark Bermuda's global property catastrophe portfolio.","Coverage effective January 1, 2023, capitalizing on hard property cat reinsurance market.","TigerRisk acted as structuring agent; Sidley Austin and Conyers Dill provided legal counsel."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.7,"calibrated_materiality_score":0.7,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":344752,"accession_number":"0000776867-22-000015","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2022-11-07T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q3 BVPS up 28% to $1,439; $876M net gain from NSM sale drives comprehensive income of $890M","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Adjusted BVPS of $1,471 as of Sept 30, up 28% quarter-over-quarter; YTD increase including dividends of 24%.","Q3 comprehensive income $890M; net gain from NSM sale of $876M, closed Aug 1, added ~$300 to ABVPS.","Ark adjusted combined ratio 86% (87% GAAP) despite $51M net Hurricane Ian losses; GWP up 33% YoY to $216M.","BAM insured $4.1B par in Q3; GWP $46M; pricing 110 bps; Kudu revenues $56M, adjusted EBITDA $12M.","Repurchased 366,645 shares for $509M in Q3 at avg $1,388 (94% of ABVPS); YTD repurchases $611M."],"consensus_eps_estimate":null,"consensus_eps_actual":254.24,"consensus_revenue_estimate":null,"consensus_revenue_actual":720300000.0,"consensus_period":"2022-Q3","consensus_source":"xbrl_only","sentiment":"positive","materiality_score":0.8,"calibrated_materiality_score":0.8,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":361234,"accession_number":"0000776867-22-000014","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2022-08-08T23:59:59+00:00","items":["2.02","9.01"],"status":"ready","headline":"White Mountains Q2 comprehensive loss of $174M; closes NSM sale adding ~$300 per share to book value","summary_kind":"llm","event_type":"earnings","confidence":"high","bullets":["Comprehensive loss attributable to common shareholders of $174M in Q2 2022 vs. $139M gain in Q2 2021.","Closed sale of NSM to Carlyle on Aug 1; estimated net gain of $300 per share, pro forma ABVPS ~$1,452.","BAM insured record par of $5.9B in Q2; Ark gross written premiums up 23% YoY, GAAP combined ratio 87%.","MediaAlpha investment value fell to $167M (from $280M at Q1 end), contributing $114M unrealized loss.","Repurchased 53,100 shares for $63M in Q2 at avg $1,179.96; undeployed capital ~$1.6B after NSM sale."],"consensus_eps_estimate":null,"consensus_eps_actual":-45.4,"consensus_revenue_estimate":null,"consensus_revenue_actual":337100000.0,"consensus_period":"2022-Q2","consensus_source":"xbrl_only","sentiment":"neutral","materiality_score":0.8,"calibrated_materiality_score":0.8,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":361233,"accession_number":"0000776867-22-000012","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2022-08-05T23:59:59+00:00","items":["2.01","8.01","9.01"],"status":"ready","headline":"White Mountains completes sale of NSM Insurance Group to Carlyle for $1.4B net cash proceeds","summary_kind":"llm","event_type":"m_and_a","confidence":"high","bullets":["Completed sale of NSM Insurance Group to Carlyle on August 1, 2022, receiving $1.4B net cash proceeds.","Gross proceeds $1.775B; proceeds used to repay NSM debt of $283M and pay transaction costs of $45M.","NSM segment assets and liabilities removed from balance sheet; pro forma total equity increases to $4.49B from $3.67B.","White Mountains generated estimated net gain of $836.9M after tax on the sale.","Pro forma statements show NSM results removed; continuing operations include HG Global/BAM, Ark, Kudu, and Other."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":380476,"accession_number":"0000776867-22-000010","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2022-06-10T23:59:59+00:00","items":["7.01","9.01"],"status":"ready","headline":"White Mountains files 8-K for annual investor presentation; no financial data disclosed","summary_kind":"llm","event_type":"other","confidence":"low","bullets":["Filing references a presentation to be used at the June 10, 2022 annual investor meeting.","No specific financial results, guidance, or operational updates are included in the 8-K.","The presentation is furnished as Exhibit 99.1 but not incorporated by reference."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null},{"id":380475,"accession_number":"0000776867-22-000009","cik":776867,"company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","ticker":"WTM","form_type":"8-K","filed_at":"2022-05-26T23:59:59+00:00","items":["5.07"],"status":"ready","headline":"White Mountains shareholders elect all directors and approve say-on-pay and PwC as auditor","summary_kind":"llm","event_type":"other_material","confidence":"high","bullets":["Class I directors Morgan W. Davis, Peter M. Carlson, Suzanne F. Shank elected with >2.3M votes FOR each.","Class III director David A. Tanner re-elected with 2,432,807 FOR (99.15% of votes cast).","Advisory resolution on executive compensation passed with 82% support (1,997,678 FOR).","Appointment of PwC as independent auditor for 2022 approved with 2,728,632 FOR (97.5%)."],"consensus_eps_estimate":null,"consensus_eps_actual":null,"consensus_revenue_estimate":null,"consensus_revenue_actual":null,"consensus_period":null,"consensus_source":null,"sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.15,"market_cap_usd":5310520000.0,"market_cap_bucket":"not_microcap","market_cap_source":"finnhub_profile2","market_cap_as_of_date":"2026-05-28","daily_digest_date":null,"daily_digest_url":null,"daily_digest_rank":null}],"next_cursor":"2022-05-26T23:59:59+00:00|380475"}