{"filings":[{"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}],"next_cursor":null}