WHITE MTNS INS GROUP LTD

Ticker: WTM CUSIP: G9618E107 Class: COM

MARTINGALE ASSET MANAGEMENT L P's Holding History (CIK: 0000936944)

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

Q2 2025

Shares 191 Value ($000) $343 Avg Close $1778.53 Range $1678.87 - $1937.23

Q1 2025

Shares 607 Value ($000) $1,169 Avg Close $1882.39 Range $1803.96 - $1993.86

Q4 2024

Shares 587 Value ($000) $1,142 Avg Close $1889.39 Range $1708.50 - $2023.00

Q3 2024

Shares 592 Value ($000) $1,004 Avg Close $1743.65 Range $1666.22 - $1847.78

Q2 2024

Shares 1,253 Value ($000) $2,277 Avg Close $1768.70 Range $1665.71 - $1899.21

Q1 2024

Shares 3,255 Value ($000) $5,840 Avg Close $1676.26 Range $1475.00 - $1849.99

Q4 2023

Shares 3,961 Value ($000) $5,961 Avg Close $1486.19 Range $1401.01 - $1562.63

Q3 2023

Shares 3,992 Value ($000) $5,971 Avg Close $1535.39 Range $1370.75 - $1617.00

Q2 2023

Shares 3,567 Value ($000) $4,954 Avg Close $1407.80 Range $1319.05 - $1540.09

Q1 2023

Shares 3,811 Value ($000) $5,250 Avg Close $1434.16 Range $1312.00 - $1560.21

Q4 2022

Shares 3,825 Value ($000) $5,410 Avg Close $1355.05 Range $1276.05 - $1435.45

Q3 2022

Shares 3,611 Value ($000) $4,707 Avg Close $1293.71 Range $1172.00 - $1393.48

Q2 2022

Shares 3,611 Value ($000) $4,502 Avg Close $1161.60 Range $1030.38 - $1291.50

Q1 2022

Shares 7,350 Value ($000) $8,353 Avg Close $1046.91 Range $982.60 - $1141.97

Q4 2021

Shares 7,904 Value ($000) $8,015 Avg Close $1056.38 Range $978.51 - $1137.50

Q3 2021

Shares 9,905 Value ($000) $10,595 Avg Close $1116.81 Range $1056.96 - $1179.20

Q2 2021

Shares 11,666 Value ($000) $13,395 Avg Close $1167.46 Range $1100.61 - $1243.00

Q1 2021

Shares 16,505 Value ($000) $18,402 Avg Close $1118.45 Range $994.91 - $1267.52

Q4 2020

Shares 14,027 Value ($000) $14,038 Avg Close $940.82 Range $778.11 - $1024.02

Q3 2020

Shares 14,597 Value ($000) $11,372 Avg Close $864.63 Range $752.10 - $961.96

Q2 2020

Shares 15,072 Value ($000) $13,385 Avg Close $901.27 Range $813.24 - $1012.83

Q1 2020

Shares 15,422 Value ($000) $14,035 Avg Close $1035.04 Range $629.21 - $1168.21

Q4 2019

Shares 16,297 Value ($000) $18,181 Avg Close $1090.77 Range $1054.00 - $1131.50

Q3 2019

Shares 15,312 Value ($000) $16,537 Avg Close $1066.63 Range $1025.25 - $1104.14

Q2 2019

Shares 5,317 Value ($000) $5,432 Avg Close $961.99 Range $906.22 - $1052.17

Q1 2019

Shares 2,337 Value ($000) $2,163 Avg Close $905.92 Range $850.75 - $961.49

Q4 2018

Shares 2,037 Value ($000) $1,748 Avg Close $891.29 Range $832.88 - $942.35

Q3 2018

Shares 3,545 Value ($000) $3,318 Avg Close $926.90 Range $895.01 - $980.89

Q2 2018

Shares 9,947 Value ($000) $9,019 Avg Close $880.88 Range $804.40 - $933.70

Q1 2018

Shares 15,824 Value ($000) $13,017 Avg Close $825.48 Range $786.23 - $858.09

Q4 2017

Shares 15,724 Value ($000) $13,387 Avg Close $874.10 Range $841.33 - $903.26

Q3 2017

Shares 15,804 Value ($000) $13,545 Avg Close $859.82 Range $838.65 - $888.00

Q2 2017

Shares 18,254 Value ($000) $15,857 Avg Close $867.55 Range $845.41 - $900.05

Q1 2017

Shares 18,380 Value ($000) $16,173 Avg Close $895.74 Range $834.20 - $948.94

Q4 2016

Shares 19,881 Value ($000) $16,623 Avg Close $838.09 Range $815.04 - $874.69

Q3 2016

Shares 20,976 Value ($000) $17,411 Avg Close $824.01 Range $804.44 - $852.58

Q2 2016

Shares 21,186 Value ($000) $17,840 Avg Close $815.85 Range $786.33 - $845.37

Q1 2016

Shares 18,065 Value ($000) $14,500 Avg Close $748.05 Range $689.31 - $809.99

Q4 2015

Shares 15,955 Value ($000) $11,597 Avg Close $765.83 Range $721.00 - $808.00

Q3 2015

Shares 11,035 Value ($000) $8,247 Avg Close $719.51 Range $645.00 - $778.19

Q2 2015

Shares 8,695 Value ($000) $5,696 Avg Close $663.32 Range $635.00 - $704.50

Q1 2015

Shares 8,095 Value ($000) $5,542 Avg Close $659.70 Range $618.00 - $696.48

Q4 2014

Shares 7,270 Value ($000) $4,581 Avg Close $635.98 Range $610.00 - $682.87

Q3 2014

Shares 6,335 Value ($000) $3,992 Avg Close $624.10 Range $599.35 - $645.00

Q2 2014

Shares 2,055 Value ($000) $1,251 Avg Close $595.51 Range $583.51 - $608.63

Q1 2014

Shares 1,235 Value ($000) $741 Avg Close $583.55 Range $557.26 - $603.88

Q3 2013

Shares 1,526 Value ($000) $867 Avg Close $580.72 Range $555.51 - $615.88

Q2 2013

Shares 1,526 Value ($000) $878 Avg Close $583.58 Range $561.79 - $615.00

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	191	$343	$1778.53	$1678.87 - $1937.23
Q1 2025	607	$1,169	$1882.39	$1803.96 - $1993.86
Q4 2024	587	$1,142	$1889.39	$1708.50 - $2023.00
Q3 2024	592	$1,004	$1743.65	$1666.22 - $1847.78
Q2 2024	1,253	$2,277	$1768.70	$1665.71 - $1899.21
Q1 2024	3,255	$5,840	$1676.26	$1475.00 - $1849.99
Q4 2023	3,961	$5,961	$1486.19	$1401.01 - $1562.63
Q3 2023	3,992	$5,971	$1535.39	$1370.75 - $1617.00
Q2 2023	3,567	$4,954	$1407.80	$1319.05 - $1540.09
Q1 2023	3,811	$5,250	$1434.16	$1312.00 - $1560.21
Q4 2022	3,825	$5,410	$1355.05	$1276.05 - $1435.45
Q3 2022	3,611	$4,707	$1293.71	$1172.00 - $1393.48
Q2 2022	3,611	$4,502	$1161.60	$1030.38 - $1291.50
Q1 2022	7,350	$8,353	$1046.91	$982.60 - $1141.97
Q4 2021	7,904	$8,015	$1056.38	$978.51 - $1137.50
Q3 2021	9,905	$10,595	$1116.81	$1056.96 - $1179.20
Q2 2021	11,666	$13,395	$1167.46	$1100.61 - $1243.00
Q1 2021	16,505	$18,402	$1118.45	$994.91 - $1267.52
Q4 2020	14,027	$14,038	$940.82	$778.11 - $1024.02
Q3 2020	14,597	$11,372	$864.63	$752.10 - $961.96
Q2 2020	15,072	$13,385	$901.27	$813.24 - $1012.83
Q1 2020	15,422	$14,035	$1035.04	$629.21 - $1168.21
Q4 2019	16,297	$18,181	$1090.77	$1054.00 - $1131.50
Q3 2019	15,312	$16,537	$1066.63	$1025.25 - $1104.14
Q2 2019	5,317	$5,432	$961.99	$906.22 - $1052.17
Q1 2019	2,337	$2,163	$905.92	$850.75 - $961.49
Q4 2018	2,037	$1,748	$891.29	$832.88 - $942.35
Q3 2018	3,545	$3,318	$926.90	$895.01 - $980.89
Q2 2018	9,947	$9,019	$880.88	$804.40 - $933.70
Q1 2018	15,824	$13,017	$825.48	$786.23 - $858.09
Q4 2017	15,724	$13,387	$874.10	$841.33 - $903.26
Q3 2017	15,804	$13,545	$859.82	$838.65 - $888.00
Q2 2017	18,254	$15,857	$867.55	$845.41 - $900.05
Q1 2017	18,380	$16,173	$895.74	$834.20 - $948.94
Q4 2016	19,881	$16,623	$838.09	$815.04 - $874.69
Q3 2016	20,976	$17,411	$824.01	$804.44 - $852.58
Q2 2016	21,186	$17,840	$815.85	$786.33 - $845.37
Q1 2016	18,065	$14,500	$748.05	$689.31 - $809.99
Q4 2015	15,955	$11,597	$765.83	$721.00 - $808.00
Q3 2015	11,035	$8,247	$719.51	$645.00 - $778.19
Q2 2015	8,695	$5,696	$663.32	$635.00 - $704.50
Q1 2015	8,095	$5,542	$659.70	$618.00 - $696.48
Q4 2014	7,270	$4,581	$635.98	$610.00 - $682.87
Q3 2014	6,335	$3,992	$624.10	$599.35 - $645.00
Q2 2014	2,055	$1,251	$595.51	$583.51 - $608.63
Q1 2014	1,235	$741	$583.55	$557.26 - $603.88
Q3 2013	1,526	$867	$580.72	$555.51 - $615.88
Q2 2013	1,526	$878	$583.58	$561.79 - $615.00