8-K
filed May 7, 2025, 7:59 PM ET
ticker WTM
CIK 0000776867
earnings
confidence high
sentiment neutral
materiality 0.60
White Mountains Q1 book value per share $1,752 (+0.4%); Ark combined ratio 94%, gross premiums up 27%
WHITE MOUNTAINS INSURANCE GROUP LTD
2025-Q1 EPS
reported $13.19
vs consensus -$14.14
▲ beat
(+193.3%)
- 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.
Machine-readable event card
- schema_version
- secwatch.filing_event.v1
- accession
- 0000776867-25-000005
- form_type
- 8-K
- ticker
- WTM
- cik
- 0000776867
- company_name
- WHITE MOUNTAINS INSURANCE GROUP LTD
- filed_at
- 2025-05-07T23:59:59+00:00
- discovered_at
- 2026-05-14T18:02:51.241879+00:00
- generated_at
- 2026-05-22T09:51:04.802171+00:00
- sec_items
- ["2.02", "9.01"]
- event_type
- earnings
- sentiment
- neutral
- materiality_score
- 0.6
- calibrated_materiality_score
- 0.6
- confidence
- high
- secwatch_canonical_url
- https://secwatch.observer/filing/0000776867-25-000005
- json_url
- https://secwatch.observer/filing/0000776867-25-000005.json
- markdown_url
- https://secwatch.observer/filing/0000776867-25-000005.md
- text_url
- https://secwatch.observer/filing/0000776867-25-000005.txt
- edgar_index_url
- https://www.sec.gov/Archives/edgar/data/776867/000077686725000005/0000776867-25-000005-index.htm
- edgar_primary_document_url
- https://www.sec.gov/Archives/edgar/data/776867/000077686725000005/wtm-20250506.htm
- generated_by_model
- deepseek-v4-flash:cloud@v2
- review_status
- machine_generated
- human_reviewed
- false
- corrected
- false
- correction_note
- null
- correction_timestamp
- null
- superseded_by
- null
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