White Mountains Insurance Group Ltd Stock Trading & 13F Insights
13F Portfolio Filings
- Most recent 13FQ3 2025
- Locationhanover, NH
- CIK0000776867
- All SEC filings
Quarter | Holdings | VALUE | Top Holdings | Form Type | Date Filed | Filing Id | |
|---|---|---|---|---|---|---|---|
1 | $203.21M | MEDIAALPHA INC | 13F-HR | Nov 13, 2025 | 000110465925110906 | ||
1 | $195.53M | MEDIAALPHA INC | 13F-HR | Aug 11, 2025 | 000110465925076169 | ||
2 | $285.93M | MEDIAALPHA INC, SPY | 13F-HR | May 12, 2025 | 000110465925047309 | ||
2 | $426.16M | SPY, MEDIAALPHA INC | 13F-HR | Feb 12, 2025 | 000110465925012202 | ||
2 | $543.22M | MEDIAALPHA INC, SPY | 13F-HR | Nov 12, 2024 | 000110465924116806 | ||
2 | $443.69M | MEDIAALPHA INC, SPY | 13F-HR | Aug 8, 2024 | 000110465924087260 | ||
2 | $617.2M | MEDIAALPHA INC, SPY | 13F-HR | May 9, 2024 | 000110465924059389 | ||
2 | $392.62M | MEDIAALPHA INC, SPY | 13F-HR | Feb 13, 2024 | 000110465924019920 | ||
2 | $440.95M | SPY, MEDIAALPHA INC | 13F-HR | Nov 9, 2023 | 000110465923115989 | ||
2 | $508.2M | SPY, MEDIAALPHA INC | 13F-HR | Aug 10, 2023 | 000110465923089581 | ||
2 | $611.14M | SPY, MEDIAALPHA INC | 13F-HR | May 11, 2023 | 000110465923058759 | ||
2 | $502.39M | SPY, MEDIAALPHA INC | 13F-HR | Feb 13, 2023 | 000110465923019698 | ||
2 | $194.66M | MEDIAALPHA INC, SPY | 13F-HR | Nov 9, 2022 | 000110465922116476 | ||
1 | $166.86M | MEDIAALPHA INC | 13F-HR | Aug 12, 2022 | 000110465922089729 | ||
1 | $280.36M | MEDIAALPHA INC | 13F-HR | May 12, 2022 | 000110465922059416 | ||
1 | $261.55M | MEDIAALPHA INC | 13F-HR | Feb 11, 2022 | 000110465922020471 | ||
1 | $316.44M | MEDIAALPHA INC | 13F-HR | Nov 12, 2021 | 000110465921137569 | ||
1 | $713.17M | MEDIAALPHA INC | 13F-HR | Aug 12, 2021 | 000110465921104158 | ||
1 | $600.18M | MEDIAALPHA INC | 13F-HR | May 14, 2021 | 000110465921066440 | ||
1 | $802.19M | MEDIAALPHA INC | 13F-HR | Feb 12, 2021 | 000110465921021926 | ||
1 | $653.27M | SYA | 13F-HR | Feb 16, 2016 | 000110465916097037 | ||
1 | $650.59M | SYA | 13F-HR | Nov 12, 2015 | 000110465915078365 | ||
1 | $496.99M | SYA | 13F-HR | Aug 12, 2015 | 000110465915058884 | ||
1 | $470.35M | SYA | 13F-HR | May 14, 2015 | 000110465915037914 | ||
1 | $462.13M | SYA | 13F-HR | Feb 17, 2015 | 000110465915010870 | ||
1 | $467.74M | SYA | 13F-HR | Nov 13, 2014 | 000110465914080391 | ||
1 | $455.91M | SYA | 13F-HR | Aug 8, 2014 | 000110465914058557 | ||
2 | $397.89M | SYA, SIEGYN | 13F-HR | May 12, 2014 | 000110465914037631 | ||
2 | $380.66M | SYA, SIEGYN | 13F-HR | Feb 13, 2014 | 000110465914009764 |