White Mountains Insurance Group Ltd

Number of records: 16
SEC FilingCompany/StockTrade DateTransactionSharesAvg. PriceTotal% HoldingsGain/Loss
09-May-24 5:04 PM
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Mediaalpha, Inc. (MAX) 07-May-24Sale 5,000,200$19.00$95,003,800.00(22%)
22.86M to 17.86M
30-Jun-23 8:13 AM
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Mediaalpha, Inc. (MAX) 30-Jun-23Purchase 5,916,820$10.00$59,168,200.0035%
16.94M to 22.86M
25-Mar-21 8:52 AM
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Mediaalpha, Inc. (MAX) 23-Mar-21Sale 3,592,200$46.00$165,240,992.00(17%)
20.53M to 16.94M
03-Nov-20 4:41 PM
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Mediaalpha, Inc. (MAX) 30-Oct-20Sale 3,609,890$19.00$68,588,000.00(15%)
24.14M to 20.53M
28-Sep-17 5:08 PM
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OneBeacon Insurance Group (OB) 28-Sep-17Disposition 71,754,704$18.10$1,298,759,936.00(100%)
71.75M to 0
< 1%
02-Feb-16 3:05 PM
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Symetra Financial Corp (SYA) 01-Feb-16Disposition 20,562,400$32.00$657,996,032.00(100%)
20.56M to 0
02-Jul-15 4:04 PM
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Symetra Financial Corp (SYA) 30-Jun-15Acquisition (other) 513,500----3%
20.05M to 20.56M
24-Jun-13 5:52 PM
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Symetra Financial Corp (SYA) 20-Jun-13Acquisition (other) 184,036----1%
17.4M to 17.58M
24-Jun-13 5:52 PM
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Symetra Financial Corp (SYA) 20-Jun-13Disposition (other) 7,023,030$15.53$109,054,000.00(26%)
27.07M to 20.05M
(129%)
24-Jun-13 5:52 PM
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Symetra Financial Corp (SYA) 20-Jun-13Exercise (in-the money or at-the-money) 9,487,870$11.49$109,054,000.0054%
17.58M to 27.07M
15-Mar-07 1:44 PM
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OneBeacon Insurance Group (OB) 15-Mar-07Market Sale
Duplicate
645,262$25.85$16,680,000.00(< 1%)
72.4M to 71.75M
(12%)
14-Nov-06 4:02 PM
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OneBeacon Insurance Group (OB) 14-Nov-06Sale 27,600,000$23.56$650,324,992.00(28%)
100.0M to 72.4M
27-Sep-06 8:30 PM
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Montpelier Re Holdings Ltd. (MRH) 27-Sep-06Market Sale 5,370,150$19.40$104,181,000.00(85%)
6.31M to 939.04K
(140%)
08-Mar-05 3:57 PM
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Montpelier Re Holdings Ltd. (MRH) 08-Mar-05Acquisition (other) 3,063$41.78$127,972.00< 1%
6.31M to 6.31M
17%
03-Nov-04 4:07 PM
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Montpelier Re Holdings Ltd. (MRH) 02-Nov-04Acquisition (other) 6,126$36.82$225,559.00< 1%
6.3M to 6.31M
34%
12-Mar-04 10:00 PM
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Montpelier Re Holdings Ltd. (MRH) 12-Mar-04Market Sale 4,500,000$34.50$155,250,000.00(42%)
10.8M to 6.3M
(47%)