State of Wisconsin Investment Board
BRK.B icon

State of Wisconsin Investment Board’s Berkshire Hathaway Class B BRK.B Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2025
Q2
$349M Sell
719,210
-31,498
-4% -$15.3M 0.85% 13
2025
Q1
$400M Buy
750,708
+14,667
+2% +$7.81M 1.03% 12
2024
Q4
$334M Sell
736,041
-36,695
-5% -$16.6M 0.85% 13
2024
Q3
$356M Buy
772,736
+28,386
+4% +$13.1M 0.89% 12
2024
Q2
$303M Sell
744,350
-19,902
-3% -$8.1M 0.8% 13
2024
Q1
$321M Sell
764,252
-40,612
-5% -$17.1M 0.85% 12
2023
Q4
$287M Buy
804,864
+59,775
+8% +$21.3M 0.81% 11
2023
Q3
$261M Buy
745,089
+41,670
+6% +$14.6M 0.82% 12
2023
Q2
$240M Sell
703,419
-14,741
-2% -$5.03M 0.67% 15
2023
Q1
$222M Buy
718,160
+42,497
+6% +$13.1M 0.66% 17
2022
Q4
$209M Sell
675,663
-59,879
-8% -$18.5M 0.67% 15
2022
Q3
$196M Sell
735,542
-172,677
-19% -$46.1M 0.62% 15
2022
Q2
$248M Sell
908,219
-47,788
-5% -$13M 0.65% 18
2022
Q1
$337M Sell
956,007
-25,136
-3% -$8.87M 0.7% 14
2021
Q4
$293M Buy
981,143
+13,367
+1% +$4M 0.57% 20
2021
Q3
$264M Buy
967,776
+3,611
+0.4% +$986K 0.55% 20
2021
Q2
$268M Sell
964,165
-7,724
-0.8% -$2.15M 0.55% 18
2021
Q1
$248M Sell
971,889
-25,216
-3% -$6.44M 0.53% 21
2020
Q4
$231M Sell
997,105
-441,162
-31% -$102M 0.54% 21
2020
Q3
$306M Buy
1,438,267
+4,634
+0.3% +$987K 0.76% 13
2020
Q2
$256M Buy
1,433,633
+92,909
+7% +$16.6M 0.71% 14
2020
Q1
$245M Sell
1,340,724
-276,210
-17% -$50.5M 0.82% 13
2019
Q4
$366M Buy
1,616,934
+23,583
+1% +$5.34M 0.92% 11
2019
Q3
$331M Buy
1,593,351
+33,484
+2% +$6.97M 0.92% 12
2019
Q2
$333M Buy
1,559,867
+104,866
+7% +$22.4M 0.93% 12
2019
Q1
$292M Sell
1,455,001
-25,657
-2% -$5.15M 0.83% 17
2018
Q4
$302M Buy
1,480,658
+5,200
+0.4% +$1.06M 0.99% 14
2018
Q3
$316M Sell
1,475,458
-85,584
-5% -$18.3M 0.87% 16
2018
Q2
$291M Sell
1,561,042
-61,554
-4% -$11.5M 0.84% 16
2018
Q1
$324M Sell
1,622,596
-54,209
-3% -$10.8M 0.93% 11
2017
Q4
$332M Buy
1,676,805
+25,079
+2% +$4.97M 0.91% 11
2017
Q3
$303M Buy
1,651,726
+83,047
+5% +$15.2M 0.89% 12
2017
Q2
$266M Buy
1,568,679
+297,610
+23% +$50.4M 0.86% 15
2017
Q1
$212M Sell
1,271,069
-63,294
-5% -$10.5M 0.82% 16
2016
Q4
$217M Sell
1,334,363
-162,813
-11% -$26.5M 0.94% 13
2016
Q3
$216M Sell
1,497,176
-13,600
-0.9% -$1.96M 0.85% 18
2016
Q2
$219M Sell
1,510,776
-37,380
-2% -$5.41M 0.88% 15
2016
Q1
$220M Sell
1,548,156
-3,910
-0.3% -$555K 0.86% 16
2015
Q4
$205M Buy
1,552,066
+51,560
+3% +$6.81M 0.79% 20
2015
Q3
$196M Buy
1,500,506
+12,850
+0.9% +$1.68M 0.76% 18
2015
Q2
$202M Buy
1,487,656
+97,920
+7% +$13.3M 0.71% 17
2015
Q1
$201M Sell
1,389,736
-3,040
-0.2% -$439K 0.69% 16
2014
Q4
$209M Buy
1,392,776
+81,470
+6% +$12.2M 0.72% 15
2014
Q3
$181M Sell
1,311,306
-203,440
-13% -$28.1M 0.66% 20
2014
Q2
$192M Buy
1,514,746
+790
+0.1% +$100K 0.69% 18
2014
Q1
$189M Sell
1,513,956
-38,420
-2% -$4.8M 0.72% 17
2013
Q4
$184M Sell
1,552,376
-28,420
-2% -$3.37M 0.71% 17
2013
Q3
$179M Sell
1,580,796
-57,570
-4% -$6.53M 0.74% 16
2013
Q2
$183M Buy
+1,638,366
New +$183M 0.77% 15