WHITE MTNS INS GROUP LTD

Ticker: WTM CUSIP: G9618E107 Class: COM

PROSPECTOR PARTNERS LLC's Holding History (CIK: 0001080380)

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

Q4 2025
Shares 490 Value ($000) $1,018 Avg Close $1955.46 Range $1648.00 - $2143.25
Q3 2025
Shares 3,783 Value ($000) $6,323 Avg Close $1784.36 Range $1659.17 - $1880.11
Q2 2025
Shares 4,076 Value ($000) $7,319 Avg Close $1778.53 Range $1678.87 - $1937.23
Q1 2025
Shares 3,855 Value ($000) $7,424 Avg Close $1882.39 Range $1803.96 - $1993.86
Q4 2024
Shares 3,855 Value ($000) $7,498 Avg Close $1889.39 Range $1708.50 - $2023.00
Q3 2024
Shares 3,855 Value ($000) $6,539 Avg Close $1743.65 Range $1666.22 - $1847.78
Q2 2024
Shares 3,289 Value ($000) $5,978 Avg Close $1768.70 Range $1665.71 - $1899.21
Q1 2024
Shares 3,293 Value ($000) $5,909 Avg Close $1676.26 Range $1475.00 - $1849.99
Q4 2023
Shares 3,268 Value ($000) $4,918 Avg Close $1486.19 Range $1401.01 - $1562.63
Q3 2023
Shares 3,227 Value ($000) $4,827 Avg Close $1535.39 Range $1370.75 - $1617.00
Q2 2023
Shares 3,227 Value ($000) $4,482 Avg Close $1407.80 Range $1319.05 - $1540.09
Q1 2023
Shares 2,257 Value ($000) $3,109 Avg Close $1434.16 Range $1312.00 - $1560.21
Q4 2022
Shares 3,080 Value ($000) $4,356 Avg Close $1355.05 Range $1276.05 - $1435.45
Q3 2022
Shares 3,080 Value ($000) $4,013 Avg Close $1293.71 Range $1172.00 - $1393.48
Q2 2022
Shares 3,100 Value ($000) $3,863 Avg Close $1161.60 Range $1030.38 - $1291.50
Q1 2022
Shares 2,970 Value ($000) $3,375 Avg Close $1046.91 Range $982.60 - $1141.97
Q3 2019
Shares 2,733 Value ($000) $2,952 Avg Close $1066.63 Range $1025.25 - $1104.14
Q2 2019
Shares 5,633 Value ($000) $5,754 Avg Close $961.99 Range $906.22 - $1052.17
Q1 2019
Shares 5,633 Value ($000) $5,213 Avg Close $905.92 Range $850.75 - $961.49
Q4 2018
Shares 6,058 Value ($000) $5,196 Avg Close $891.29 Range $832.88 - $942.35
Q3 2018
Shares 6,058 Value ($000) $5,670 Avg Close $926.90 Range $895.01 - $980.89
Q2 2018
Shares 6,058 Value ($000) $5,492 Avg Close $880.88 Range $804.40 - $933.70
Q1 2018
Shares 5,480 Value ($000) $4,507 Avg Close $825.48 Range $786.23 - $858.09
Q4 2017
Shares 10,605 Value ($000) $9,028 Avg Close $874.10 Range $841.33 - $903.26
Q3 2017
Shares 8,900 Value ($000) $7,627 Avg Close $859.82 Range $838.65 - $888.00
Q1 2016
Shares 14,735 Value ($000) $11,826 Avg Close $748.05 Range $689.31 - $809.99
Q4 2015
Shares 14,905 Value ($000) $10,833 Avg Close $765.83 Range $721.00 - $808.00
Q3 2015
Shares 15,455 Value ($000) $11,550 Avg Close $719.51 Range $645.00 - $778.19
Q2 2015
Shares 50,000 Value ($000) $32,747 Avg Close $663.32 Range $635.00 - $704.50
Q1 2015
Shares 50,000 Value ($000) $34,226 Avg Close $659.70 Range $618.00 - $696.48
Q4 2014
Shares 50,000 Value ($000) $31,506 Avg Close $635.98 Range $610.00 - $682.87
Q3 2014
Shares 50,000 Value ($000) $31,504 Avg Close $624.10 Range $599.35 - $645.00
Q2 2014
Shares 50,000 Value ($000) $30,422 Avg Close $595.51 Range $583.51 - $608.63
Q1 2014
Shares 50,000 Value ($000) $29,995 Avg Close $583.55 Range $557.26 - $603.88
Q4 2013
Shares 50,000 Value ($000) $30,154 Avg Close $589.37 Range $566.30 - $606.94
Q3 2013
Shares 50,000 Value ($000) $28,381 Avg Close $580.72 Range $555.51 - $615.88
Q2 2013
Shares 50,000 Value ($000) $28,747 Avg Close $583.58 Range $561.79 - $615.00