WHITE MTNS INS GROUP LTD (G9618E107) Institutional Buying Activity
Institutional investors tracked by InsiderSet increased exposure to WHITE MTNS INS GROUP LTD (G9618E107) during the quarter ended March 31, 2026 through a combination of new purchases and expanded existing positions disclosed in SEC Form 13F filings.
The largest institutional buyer of G9618E107 during the latest reporting period was Longleaf Partners, which increased its reported G9618E107 position by approximately $17.65M based on quarter-end filing values. Several additional hedge funds and long-term asset managers also reported meaningful increases in G9618E107 exposure during the quarter.
Institutional buying activity can provide insight into investor conviction, sector allocation trends, and smart money positioning toward WHITE MTNS INS GROUP LTD (G9618E107). InsiderSet tracks quarterly accumulation trends, new institutional positions, ownership increases, and estimated performance of newly disclosed holdings using SEC filing data and recent market prices.
The investors highlighted on this page collectively added approximately $29.44M in reported G9618E107 exposure during the latest filing period, reflecting continued institutional interest in WHITE MTNS INS GROUP LTD's growth initiatives and strategic positioning.
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q4 2015 | Renaissance Technologies LLC | Buy | 600 | 38,200 | $27,764 |
| Q3 2015 | Renaissance Technologies LLC | Buy | 3,900 | 37,600 | $28,098 |
| Q2 2015 | Renaissance Technologies LLC | Buy | 2,500 | 33,700 | $22,071 |
| Q1 2015 | Renaissance Technologies LLC | Buy | 2,300 | 31,200 | $21,357 |
| Q4 2014 | Renaissance Technologies LLC | Buy | 6,000 | 28,900 | $18,210 |
| Q3 2014 | Bares Capital Management | Buy | 577 | 2,503 | $1,577 |
| Q3 2014 | Renaissance Technologies LLC | Buy | 407 | 22,900 | $14,429 |
| Q2 2014 | Bares Capital Management | Buy | 485 | 1,926 | $1,172 |
| Q2 2014 | Third Avenue Management | Buy | 73 | 191,647 | $116,605 |
| Q1 2014 | Renaissance Technologies LLC | Buy | 8,900 | 23,300 | $13,978 |
| Q4 2013 | Renaissance Technologies LLC | Buy | 2,000 | 14,400 | $8,684 |
| Q3 2013 | Third Avenue Management | Buy | 3,551 | 270,824 | $153,725 |
| Q3 2013 | Renaissance Technologies LLC | Buy | 3,000 | 12,400 | $7,038 |
| Q3 2013 | Bares Capital Management | Buy | 27 | 1,465 | $832 |
| Q2 2013 | Third Avenue Management | Buy | 267,273 | 267,273 | $153,666 |
| Q2 2013 | Renaissance Technologies LLC | Buy | 9,400 | 9,400 | $5,404 |
| Q2 2013 | Bares Capital Management | Buy | 1,438 | 1,438 | $827 |
Frequently asked questions about G9618E107 activity
Which institutional owners are buying G9618E107?
Institutional owners buying G9618E107 include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in G9618E107 activity?
"Buy" means an investor increased their reported position in G9618E107 compared to the prior reporting period. This reflects growing exposure to WHITE MTNS INS GROUP LTD (G9618E107) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in G9618E107 increasing?
Institutional interest in G9618E107 can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.