White Mountains Insurance Group, Ltd.
US ˙ NYSE ˙ BMG9618E1075

SecurityWTM / White Mountains Insurance Group, Ltd.
InstitutionMacquarie Group Ltd
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Macquarie Group Ltd closes position in WTM / White Mountains Insurance Group, Ltd.

On February 13, 2026 - Macquarie Group Ltd filed a 13F-HR form disclosing ownership of 0 shares of White Mountains Insurance Group, Ltd. (US:WTM) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 107 shares of White Mountains Insurance Group, Ltd.. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-02-13 2025-12-31 13F WHITE MTNS INS GROUP COM G9618E107 0 -100.00 0
2025-11-13 2025-09-30 13F WHITE MTNS INS GROUP COM G9618E107 107 107 179 0.0002
2023-02-21 2022-12-31 13F WHITE MTNS INS GROUP COM G9618E107 0 -34 -100.00 0 -100.00
2022-11-14 2022-09-30 13F WHITE MTNS INS GROUP COM G9618E107 34 -132 -79.52 109 -47.34 0.0001
2022-08-17 2022-06-30 13F/A-1 WHITE MTNS INS GROUP COM G9618E107 166 -22 -11.70 207 -3.27 0.0002
2022-08-15 2022-06-30 13F WHITE MTNS INS GROUP COM G9618E107 166 -22 207 0.0001
2022-05-16 2022-03-31 13F WHITE MTNS INS GROUP COM G9618E107 188 1 0.53 214 13.23 0.0002
2022-02-11 2021-12-31 13F WHITE MTNS INS GROUP COM G9618E107 187 -3 -1.58 189 -6.90 0.0002
2021-11-12 2021-09-30 13F WHITE MTNS INS GROUP COM G9618E107 190 -8 -4.04 203 -10.57 0.0002
2021-08-13 2021-06-30 13F WHITE MTNS INS GROUP COM G9618E107 198 -15 -7.04 227 -4.22 0.0002
2021-05-14 2021-03-31 13F WHITE MTNS INS GROUP COM G9618E107 213 -29 -11.98 237 -2.07 0.0003
2021-02-16 2020-12-31 13F WHITE MTNS INS GROUP COM G9618E107 242 -5,582 -95.84 242 -94.67 0.0004
2020-11-13 2020-09-30 13F WHITE MTNS INS GROUP COM G9618E107 5,824 -8 -0.14 4,537 -12.38 0.0077
2020-08-11 2020-06-30 13F WHITE MTNS INS GROUP COM G9618E107 5,832 498 9.34 5,178 6.67 0.0089
2020-05-15 2020-03-31 13F WHITE MTNS INS GROUP COM G9618E107 5,334 84 1.60 4,854 -17.11 0.0100
2020-03-18 2019-12-31 13F/A-2 WHITE MTNS INS GROUP COM G9618E107 5,250 170 3.35 5,856 6.74 0.0084
2020-02-28 2019-12-31 13F/A-1 WHITE MTNS INS GROUP COM G9618E107 5,250 0 5,856 0.0085
2020-02-14 2019-12-31 13F WHITE MTNS INS GROUP COM G9618E107 5,250 170 5,856 7,348.7837
2019-11-14 2019-09-30 13F WHITE MTNS INS GROUP COM G9618E107 5,080 5,080 5,486 0.0092
2016-05-16 2016-03-31 13F WHITE MTNS INS GROUP LTD COM COM G9618E107 0 -1,300 -100.00 0 -100.00
2016-02-16 2015-12-31 13F WHITE MTNS INS GROUP LTD COM COM G9618E107 1,300 1,300 945 0.0019
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.