WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) — research page
US · us-cm-kg/NYSE/WTM · as of 2026-11-08
Identity and listing
WHITE MOUNTAINS INSURANCE GROUP LTD is listed on NYSE under the ticker WTM. Its ISIN is USG9618E1076 and its LEI is not on the record (no GLEIF record with the exact legal name in jurisdiction US-D0). Its security type is Corporate, its segment is not on the record, its sector is 6331 Fire, Marine & Casualty Insurance, and its jurisdiction is Bermuda. Its status is listed, not halted.
| field | value | source · read date |
|---|---|---|
| name | WHITE MOUNTAINS INSURANCE GROUP LTD | source · 2026-11-08 |
| exchange | NYSE | source · 2026-11-08 |
| ticker | WTM | source · 2026-11-08 |
| ISIN | USG9618E1076 | source · 2026-10-13 |
| LEI | not on the record | |
| security type | Corporate | source · 2026-11-08 |
| segment | not on the record | |
| sector | 6331 Fire, Marine & Casualty Insurance | source · 2026-11-08 |
| jurisdiction | Bermuda | source · 2026-11-08 |
| status | listed, not halted | source · 2026-11-08 |
The disclosure read
The record holds 68 filings in the twelve months to 2026-11-08, across 38 filing days. The median gap between filing days is 6 days. The latest filing is dated 2026-11-05 and is of type results, 3 days before the record date. The NYSE median cadence gap is 6.0 days and its median latency is 4.0 days; the sector median cadence gap is 5.0 days and its median latency is 3 days.
| filings | median gap between filing days | days from latest filing to as-of | |
|---|---|---|---|
| this issuer | 68 | 6 | 3 |
| exchange median: NYSE (3256 issuers) | 64 | 6 | 4 |
| sector median: 6331 Fire, Marine & Casualty Insurance (85 issuers) | 80 | 5 | 3 |
| date | type | category | filing |
|---|---|---|---|
| 2026-11-05 | results | 10-Q | 10-Q — 10-Q |
| 2026-11-05 | results | 8-K | 8-K — 8-K (items 2.02,9.01) |
| 2026-11-05 | regulatory_filing | SCHEDULE 13D/A | SCHEDULE 13D/A |
| 2026-11-05 | directors_dealings | 4 | 4 |
| 2026-10-30 | regulatory_filing | SCHEDULE 13D/A | SCHEDULE 13D/A |
window 2025-11-08 to 2026-11-08 · the node's disclosure lines, as get_filings serves them
Auditor
The auditor is not on the record (no dei:AuditorName tag on the latest annual report cover, as foreign private issuers and older filings carry none), and its location is not on the record. The record holds no auditor changes.
Events and halts
The record holds no listing, delisting or name change lines. The domicile change is not on the record (EDGAR states no dated change of state of incorporation on a filing line), and the segment move is not on the record (the exchanges' tier transfers are not EDGAR filings). The halt flag is listed, not halted.
Orderability
The outcome is not determinable, because the chapter's orderability section carries no client categories and so the outcome cannot name its client category. The rule version is acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, and the chapter is as of 2026-11-04.
rule acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1 · chapter as of 2026-11-04 · the full outcome: get_orderability
Coverage
No research houses were found on the issuer's own investor-relations page; the count is 0.
Open research
No openly published research notes were found; the count is 0.
Licensed
Licensed research: none loaded. A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded.
| licensor | entitlement | title | date | source |
|---|---|---|---|---|
| none loaded |
As-of depth
The sealed years that hold the issuer are 2021, 2022, 2023, 2024, 2025 and 2026. The market's earliest sealed date is 2021-01-04, and the live record began on 2026-09-12.
Sources
7 source pages are named on this page; every value above carries its own source page and read date in the numbers.
- 10.1
- https://www.sec.gov/files/company_tickers_exchange.json (identity.exchange)
- 10.2
- https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data (identity.isin)
- 10.3
- https://data.sec.gov/submissions/CIK0000776867.json (identity.jurisdiction)
- 10.4
- https://mcp.us-cm-kg.ai/events/NYSE/WTM (the disclosure lines)
- 10.5
- https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts (the halt flag)
- 10.6
- https://mcp.us-cm-kg.ai/book/aio.json (the orderability chapter)
- 10.7
- https://mcp.us-cm-kg.ai/record/NYSE/WTM (the record)
Read it by agent
The same page, signed and receipted: get_research at https://mcp.getissuer.ai/mcp with {"isin":"USG9618E1076"}. Twins: .md · .json. Written: Claude through the platform account, Haiku class; one pass; checked against the numbers. Page hash sha256:f588d38ae2ed2764.