Swiss National Bank
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Swiss National Bank’s White Mountains Insurance WTM Stock Holding History

Swiss National Bank’s Portfolio WTM Stock Details WTM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$10M Sell
4,826
-210
-4% -$449K 0.01% 1018
2026
Q1 		$11.1M Sell
5,036
-50
-1% -$107K 0.01% 902
2025
Q4 		$10.6M Buy
5,086
+140
+3% +$274K 0.01% 945
2025
Q3 		$8.27M Hold
4,946
– – ﹤0.01% 1061
2025
Q2 		$8.88M Hold
4,946
– – 0.01% 982
2025
Q1 		$9.53M Sell
4,946
-100
-2% -$188K 0.01% 924
2024
Q4 		$9.81M Hold
5,046
– – 0.01% 955
2024
Q3 		$8.56M Hold
5,046
– – 0.01% 1019
2024
Q2 		$9.17M Hold
5,046
– – 0.01% 950
2024
Q1 		$9.05M Hold
5,046
– – 0.01% 967
2023
Q4 		$7.59M Sell
5,046
-600
-11% -$892K 0.01% 1038
2023
Q3 		$8.44M Buy
5,646
+100
+2% +$154K 0.01% 972
2023
Q2 		$7.7M Hold
5,546
– – 0.01% 1048
2023
Q1 		$7.64M Sell
5,546
-700
-11% -$1M 0.01% 1026
2022
Q4 		$8.83M Buy
6,246
+200
+3% +$271K 0.01% 983
2022
Q3 		$7.88M Sell
6,046
-1,100
-15% -$1.42M 0.01% 1012
2022
Q2 		$8.9M Hold
7,146
– – 0.01% 983
2022
Q1 		$8.12M Buy
7,146
+300
+4% +$314K ﹤0.01% 1136
2021
Q4 		$6.94M Hold
6,846
– – ﹤0.01% 1243
2021
Q3 		$7.32M Hold
6,846
– – ﹤0.01% 1186
2021
Q2 		$7.86M Sell
6,846
-200
-3% -$233K ﹤0.01% 1168
2021
Q1 		$7.86M Hold
7,046
– – 0.01% 1153
2020
Q4 		$7.05M Hold
7,046
– – 0.01% 1140
2020
Q3 		$5.49M Hold
7,046
– – ﹤0.01% 1115
2020
Q2 		$6.26M Buy
7,046
+900
+15% +$811K 0.01% 1022
2020
Q1 		$5.59M Hold
6,146
– – 0.01% 875
2019
Q4 		$6.86M Buy
6,146
+200
+3% +$218K 0.01% 960
2019
Q3 		$6.42M Hold
5,946
– – 0.01% 956
2019
Q2 		$6.07M Buy
5,946
+200
+3% +$192K 0.01% 995
2019
Q1 		$5.32M Buy
5,746
+100
+2% +$90.6K 0.01% 1044
2018
Q4 		$4.84M Buy
5,646
+100
+2% +$89.1K 0.01% 1000
2018
Q3 		$5.19M Hold
5,546
– – 0.01% 1092
2018
Q2 		$5.03M Sell
5,546
-1,000
-15% -$881K 0.01% 1091
2018
Q1 		$5.38M Buy
6,546
+100
+2% +$82.5K 0.01% 999
2017
Q4 		$5.49M Buy
6,446
+100
+2% +$87.4K 0.01% 983
2017
Q3 		$5.44M Sell
6,346
-1,300
-17% -$1.12M 0.01% 969
2017
Q2 		$6.64M Hold
7,646
– – 0.01% 837
2017
Q1 		$6.73M Sell
7,646
-400
-5% -$358K 0.01% 817
2016
Q4 		$6.73M Sell
8,046
-200
-2% -$168K 0.01% 793
2016
Q3 		$6.84M Sell
8,246
-1,200
-13% -$989K 0.01% 754
2016
Q2 		$7.95M Sell
9,446
-200
-2% -$163K 0.01% 709
2016
Q1 		$7.47M Buy
9,646
+1,915
+25% +$1.43M 0.01% 706
2015
Q4 		$5.62M Buy
+7,731
New +$5.92M 0.01% 740

Other funds holding WTM

Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RRAM
River Road Asset Management Louisville, Kentucky $8.99B AUM 12.83% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
CB
Cooke & Bieler Philadelphia, Pennsylvania $8.65B AUM 9.66% 1-Year Est. Return
WCM
Wallace Capital Management Dallas, Texas $912M AUM 21.45% 1-Year Est. Return
FMI
Fiduciary Management Inc Milwaukee, Wisconsin $7.03B AUM 11.68% 1-Year Est. Return

Swiss National Bank's WTM Position: Q2 2026 in Review

Swiss National Bank reduced its White Mountains Insurance (WTM) stake by 4.2% in Q2 2026, selling an estimated $449K and leaving 4,826 shares worth $10M. The position accounts for 0.01% of the portfolio, ranked #1018.

Swiss National Bank first reported a position in WTM in Q4 2015 and has held it in 43 quarters since. The position peaked at $11.1M in Q1 2026. 356 funds tracked by Wall St. Rank hold WTM as of Q2 2026.

  • Swiss National Bank held 4,826 shares of White Mountains Insurance worth $10M as of Q2 2026.
  • Swiss National Bank sold 210 White Mountains Insurance shares in Q2 2026, an estimated $449K.
  • White Mountains Insurance made up 0.01% of Swiss National Bank's portfolio in Q2 2026, its #1018 holding.
  • Swiss National Bank first reported a position in White Mountains Insurance in Q4 2015 and has held it in 43 quarters since.
  • Swiss National Bank's White Mountains Insurance position peaked at $11.1M in Q1 2026.
  • 356 funds tracked by Wall St. Rank held White Mountains Insurance as of Q2 2026.

Based on Swiss National Bank's 13F filing for Q2 2026, filed 11 Aug 2026.