RENAISSANCE TECHNOLOGIES LLC
Position in WTM — White Mountains Insurance Group Ltd
CIK 1037389
NEW YORK, NY
Position in WTM
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$5,736,262
+$2,617,139 QoQ
Shares Held
2,611
+74.0% QoQ
Ownership
0.109%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in WTM Over Time
Shares Held
Position Value (USD)
Position in Insurance - Property & Casualty
Financial Services · as of Mar 31, 2026RENAISSANCE TECHNOLOGIES LLC holds $469,662,798 across 32 Insurance - Property & Casualty names. WTM ranks #14 (1.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | PGR |
Progressive Corp/Oh/
|
559,782 | $110,971,183 | |
| 2 | MCY |
Mercury General Corp
|
823,582 | $72,598,753 | |
| 3 | MKL |
Markel Group Inc.
|
34,621 | $66,267,014 | |
| 4 | ALL |
Allstate Corp
|
317,700 | $65,871,918 | |
| 5 | L |
Loews Corp
|
339,200 | $36,206,208 | |
| 6 | KMPR |
KEMPER Corp
|
381,410 | $11,655,889 | |
| 7 | ROOT |
Root, Inc.
|
238,781 | $10,546,956 | |
| 8 | SAFT |
Safety Insurance Group Inc
|
140,400 | $10,198,656 |
All Filings in WTM
Export CSV
24 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $5,736,262 | 2,611 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $3,119,123 | 1,501 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $3,093,983 | 1,851 | Shares | Sole | 2025-11-13 | |
| 2025-03-31 | $1,155,486 | 600 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $1,167,036 | 600 | Shares | Sole | 2025-02-13 | |
| 2024-09-30 | $3,222,780 | 1,900 | Shares | Sole | 2024-11-13 | |
| 2024-06-30 | $3,634,900 | 2,000 | Shares | Sole | 2024-08-09 | |
| 2024-03-31 | $4,306 | 2,400 | Shares | Sole | 2024-05-13 | |
| 2023-12-31 | $4,666 | 3,100 | Shares | Sole | 2024-02-13 | |
| 2023-09-30 | $4,936 | 3,300 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $3,889 | 2,800 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $2,342 | 1,700 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $1,556 | 1,100 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $1,172,718 | 900 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $4,361,455 | 3,500 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $5,340,328 | 4,700 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $13,282,090 | 13,100 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $13,156,203 | 12,300 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $17,564,859 | 15,300 | Shares | Sole | 2021-08-13 | |
| 2021-03-31 | $20,402,670 | 18,300 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $3,733,462 | 3,731 | Shares | Sole | 2021-02-10 | |
| 2020-09-30 | $5,998,300 | 7,700 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $9,412,482 | 10,600 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $10,192,000 | 11,200 | Shares | Sole | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||