WHITE MTNS INS GROUP LTD

Ticker: WTM CUSIP: G9618E107 Class: COM

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 156,604 Value ($000) $325,428 Avg Close $1955.46 Range $1648.00 - $2143.25

Q3 2025

Shares 157,217 Value ($000) $262,792 Avg Close $1784.36 Range $1659.17 - $1880.11

Q2 2025

Shares 155,753 Value ($000) $279,687 Avg Close $1778.53 Range $1678.87 - $1937.23

Q1 2025

Shares 156,617 Value ($000) $301,609 Avg Close $1882.39 Range $1803.96 - $1993.86

Q4 2024

Shares 157,395 Value ($000) $306,140 Avg Close $1889.39 Range $1708.50 - $2023.00

Q3 2024

Shares 158,534 Value ($000) $268,907 Avg Close $1743.65 Range $1666.22 - $1847.78

Q2 2024

Shares 159,561 Value ($000) $289,987 Avg Close $1768.70 Range $1665.71 - $1899.21

Q1 2024

Shares 161,918 Value ($000) $290,529 Avg Close $1676.26 Range $1475.00 - $1849.99

Q4 2023

Shares 161,957 Value ($000) $243,745 Avg Close $1486.19 Range $1401.01 - $1562.63

Q3 2023

Shares 160,493 Value ($000) $240,051 Avg Close $1535.39 Range $1370.75 - $1617.00

Q2 2023

Shares 158,625 Value ($000) $220,315 Avg Close $1407.80 Range $1319.05 - $1540.09

Q1 2023

Shares 159,938 Value ($000) $220,313 Avg Close $1434.16 Range $1312.00 - $1560.21

Q4 2022

Shares 160,079 Value ($000) $226 Avg Close $1355.05 Range $1276.05 - $1435.45

Q3 2022

Shares 160,965 Value ($000) $209,740 Avg Close $1293.71 Range $1172.00 - $1393.48

Q2 2022

Shares 160,404 Value ($000) $199,882 Avg Close $1161.60 Range $1030.38 - $1291.50

Q1 2022

Shares 154,553 Value ($000) $175,605 Avg Close $1046.91 Range $982.60 - $1141.97

Q4 2021

Shares 149,502 Value ($000) $151,580 Avg Close $1056.38 Range $978.51 - $1137.50

Q3 2021

Shares 150,113 Value ($000) $160,565 Avg Close $1116.81 Range $1056.96 - $1179.20

Q2 2021

Shares 143,572 Value ($000) $164,825 Avg Close $1167.46 Range $1100.61 - $1243.00

Q1 2021

Shares 134,298 Value ($000) $149,729 Avg Close $1118.45 Range $994.91 - $1267.52

Q4 2020

Shares 135,923 Value ($000) $136,012 Avg Close $940.82 Range $778.11 - $1024.02

Q3 2020

Shares 138,026 Value ($000) $107,521 Avg Close $864.63 Range $752.10 - $961.96

Q2 2020

Shares 138,862 Value ($000) $123,304 Avg Close $901.27 Range $813.24 - $1012.83

Q1 2020

Shares 140,461 Value ($000) $127,819 Avg Close $1035.04 Range $629.21 - $1168.21

Q4 2019

Shares 139,104 Value ($000) $155,173 Avg Close $1090.77 Range $1054.00 - $1131.50

Q3 2019

Shares 138,981 Value ($000) $150,098 Avg Close $1066.63 Range $1025.25 - $1104.14

Q2 2019

Shares 129,983 Value ($000) $132,772 Avg Close $961.99 Range $906.22 - $1052.17

Q1 2019

Shares 121,064 Value ($000) $112,042 Avg Close $905.92 Range $850.75 - $961.49

Q4 2018

Shares 121,813 Value ($000) $104,478 Avg Close $891.29 Range $832.88 - $942.35

Q3 2018

Shares 120,261 Value ($000) $112,547 Avg Close $926.90 Range $895.01 - $980.89

Q2 2018

Shares 113,510 Value ($000) $102,908 Avg Close $880.88 Range $804.40 - $933.70

Q1 2018

Shares 90,583 Value ($000) $74,506 Avg Close $825.48 Range $786.23 - $858.09

Q4 2017

Shares 66,588 Value ($000) $56,685 Avg Close $874.10 Range $841.33 - $903.26

Q3 2017

Shares 61,819 Value ($000) $52,978 Avg Close $859.82 Range $838.65 - $888.00

Q2 2017

Shares 61,223 Value ($000) $53,181 Avg Close $867.55 Range $845.41 - $900.05

Q1 2017

Shares 58,904 Value ($000) $51,829 Avg Close $895.74 Range $834.20 - $948.94

Q4 2016

Shares 55,807 Value ($000) $46,658 Avg Close $838.09 Range $815.04 - $874.69

Q3 2016

Shares 50,134 Value ($000) $41,610 Avg Close $824.01 Range $804.44 - $852.58

Q2 2016

Shares 45,870 Value ($000) $38,621 Avg Close $815.85 Range $786.33 - $845.37

Q1 2016

Shares 45,546 Value ($000) $36,556 Avg Close $748.05 Range $689.31 - $809.99

Q4 2015

Shares 45,390 Value ($000) $32,991 Avg Close $765.83 Range $721.00 - $808.00

Q3 2015

Shares 35,545 Value ($000) $26,565 Avg Close $719.51 Range $645.00 - $778.19

Q2 2015

Shares 32,257 Value ($000) $21,127 Avg Close $663.32 Range $635.00 - $704.50

Q1 2015

Shares 28,117 Value ($000) $19,246 Avg Close $659.70 Range $618.00 - $696.48

Q4 2014

Shares 25,367 Value ($000) $15,986 Avg Close $635.98 Range $610.00 - $682.87

Q3 2014

Shares 19,767 Value ($000) $12,455 Avg Close $624.10 Range $599.35 - $645.00

Q2 2014

Shares 13,116 Value ($000) $7,980 Avg Close $595.51 Range $583.51 - $608.63

Q1 2014

Shares 6,716 Value ($000) $4,029 Avg Close $583.55 Range $557.26 - $603.88

Q4 2013

Shares 6,716 Value ($000) $4,050 Avg Close $589.37 Range $566.30 - $606.94

Q3 2013

Shares 6,716 Value ($000) $3,812 Avg Close $580.72 Range $555.51 - $615.88

Q2 2013

Shares 6,716 Value ($000) $3,861 Avg Close $583.58 Range $561.79 - $615.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	156,604	$325,428	$1955.46	$1648.00 - $2143.25
Q3 2025	157,217	$262,792	$1784.36	$1659.17 - $1880.11
Q2 2025	155,753	$279,687	$1778.53	$1678.87 - $1937.23
Q1 2025	156,617	$301,609	$1882.39	$1803.96 - $1993.86
Q4 2024	157,395	$306,140	$1889.39	$1708.50 - $2023.00
Q3 2024	158,534	$268,907	$1743.65	$1666.22 - $1847.78
Q2 2024	159,561	$289,987	$1768.70	$1665.71 - $1899.21
Q1 2024	161,918	$290,529	$1676.26	$1475.00 - $1849.99
Q4 2023	161,957	$243,745	$1486.19	$1401.01 - $1562.63
Q3 2023	160,493	$240,051	$1535.39	$1370.75 - $1617.00
Q2 2023	158,625	$220,315	$1407.80	$1319.05 - $1540.09
Q1 2023	159,938	$220,313	$1434.16	$1312.00 - $1560.21
Q4 2022	160,079	$226	$1355.05	$1276.05 - $1435.45
Q3 2022	160,965	$209,740	$1293.71	$1172.00 - $1393.48
Q2 2022	160,404	$199,882	$1161.60	$1030.38 - $1291.50
Q1 2022	154,553	$175,605	$1046.91	$982.60 - $1141.97
Q4 2021	149,502	$151,580	$1056.38	$978.51 - $1137.50
Q3 2021	150,113	$160,565	$1116.81	$1056.96 - $1179.20
Q2 2021	143,572	$164,825	$1167.46	$1100.61 - $1243.00
Q1 2021	134,298	$149,729	$1118.45	$994.91 - $1267.52
Q4 2020	135,923	$136,012	$940.82	$778.11 - $1024.02
Q3 2020	138,026	$107,521	$864.63	$752.10 - $961.96
Q2 2020	138,862	$123,304	$901.27	$813.24 - $1012.83
Q1 2020	140,461	$127,819	$1035.04	$629.21 - $1168.21
Q4 2019	139,104	$155,173	$1090.77	$1054.00 - $1131.50
Q3 2019	138,981	$150,098	$1066.63	$1025.25 - $1104.14
Q2 2019	129,983	$132,772	$961.99	$906.22 - $1052.17
Q1 2019	121,064	$112,042	$905.92	$850.75 - $961.49
Q4 2018	121,813	$104,478	$891.29	$832.88 - $942.35
Q3 2018	120,261	$112,547	$926.90	$895.01 - $980.89
Q2 2018	113,510	$102,908	$880.88	$804.40 - $933.70
Q1 2018	90,583	$74,506	$825.48	$786.23 - $858.09
Q4 2017	66,588	$56,685	$874.10	$841.33 - $903.26
Q3 2017	61,819	$52,978	$859.82	$838.65 - $888.00
Q2 2017	61,223	$53,181	$867.55	$845.41 - $900.05
Q1 2017	58,904	$51,829	$895.74	$834.20 - $948.94
Q4 2016	55,807	$46,658	$838.09	$815.04 - $874.69
Q3 2016	50,134	$41,610	$824.01	$804.44 - $852.58
Q2 2016	45,870	$38,621	$815.85	$786.33 - $845.37
Q1 2016	45,546	$36,556	$748.05	$689.31 - $809.99
Q4 2015	45,390	$32,991	$765.83	$721.00 - $808.00
Q3 2015	35,545	$26,565	$719.51	$645.00 - $778.19
Q2 2015	32,257	$21,127	$663.32	$635.00 - $704.50
Q1 2015	28,117	$19,246	$659.70	$618.00 - $696.48
Q4 2014	25,367	$15,986	$635.98	$610.00 - $682.87
Q3 2014	19,767	$12,455	$624.10	$599.35 - $645.00
Q2 2014	13,116	$7,980	$595.51	$583.51 - $608.63
Q1 2014	6,716	$4,029	$583.55	$557.26 - $603.88
Q4 2013	6,716	$4,050	$589.37	$566.30 - $606.94
Q3 2013	6,716	$3,812	$580.72	$555.51 - $615.88
Q2 2013	6,716	$3,861	$583.58	$561.79 - $615.00