State of Wisconsin Investment Board
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State of Wisconsin Investment Board’s Merck MRK Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2025
Q2
$117M Sell
1,484,036
-69,719
-4% -$5.52M 0.29% 55
2025
Q1
$139M Buy
1,553,755
+53,834
+4% +$4.83M 0.36% 40
2024
Q4
$149M Sell
1,499,921
-90,291
-6% -$8.98M 0.38% 34
2024
Q3
$181M Buy
1,590,212
+142,531
+10% +$16.2M 0.45% 28
2024
Q2
$179M Sell
1,447,681
-8,952
-0.6% -$1.11M 0.47% 28
2024
Q1
$192M Buy
1,456,633
+39,534
+3% +$5.22M 0.51% 29
2023
Q4
$154M Sell
1,417,099
-20,803
-1% -$2.27M 0.44% 39
2023
Q3
$148M Sell
1,437,902
-177,048
-11% -$18.2M 0.46% 32
2023
Q2
$186M Sell
1,614,950
-27,992
-2% -$3.23M 0.52% 25
2023
Q1
$175M Buy
1,642,942
+157,455
+11% +$16.8M 0.52% 26
2022
Q4
$165M Buy
1,485,487
+49,567
+3% +$5.5M 0.53% 29
2022
Q3
$124M Sell
1,435,920
-395,757
-22% -$34.1M 0.39% 38
2022
Q2
$167M Sell
1,831,677
-70,893
-4% -$6.46M 0.44% 31
2022
Q1
$156M Sell
1,902,570
-431,638
-18% -$35.4M 0.32% 51
2021
Q4
$179M Buy
2,334,208
+19,679
+0.9% +$1.51M 0.35% 49
2021
Q3
$174M Buy
2,314,529
+85,333
+4% +$6.41M 0.36% 41
2021
Q2
$173M Buy
2,229,196
+72,505
+3% +$5.64M 0.36% 43
2021
Q1
$166M Buy
2,156,691
+189,627
+10% +$14.6M 0.35% 48
2020
Q4
$161M Buy
1,967,064
+31,812
+2% +$2.6M 0.37% 45
2020
Q3
$161M Sell
1,935,252
-71,300
-4% -$5.91M 0.4% 38
2020
Q2
$155M Sell
2,006,552
-135,434
-6% -$10.5M 0.43% 39
2020
Q1
$165M Buy
2,141,986
+152,512
+8% +$11.7M 0.55% 23
2019
Q4
$181M Sell
1,989,474
-659,940
-25% -$60M 0.45% 36
2019
Q3
$223M Sell
2,649,414
-130,072
-5% -$10.9M 0.62% 29
2019
Q2
$233M Sell
2,779,486
-426,951
-13% -$35.8M 0.65% 24
2019
Q1
$267M Buy
3,206,437
+49,781
+2% +$4.14M 0.76% 21
2018
Q4
$241M Buy
3,156,656
+196,255
+7% +$15M 0.79% 23
2018
Q3
$210M Sell
2,960,401
-155,815
-5% -$11.1M 0.58% 29
2018
Q2
$189M Sell
3,116,216
-302,067
-9% -$18.3M 0.54% 30
2018
Q1
$186M Sell
3,418,283
-127,627
-4% -$6.95M 0.54% 31
2017
Q4
$200M Buy
3,545,910
+151,402
+4% +$8.52M 0.55% 32
2017
Q3
$217M Sell
3,394,508
-647,485
-16% -$41.5M 0.64% 24
2017
Q2
$259M Buy
4,041,993
+715,980
+22% +$45.9M 0.84% 17
2017
Q1
$211M Buy
3,326,013
+532,003
+19% +$33.8M 0.82% 17
2016
Q4
$164M Sell
2,794,010
-766,324
-22% -$45.1M 0.71% 23
2016
Q3
$222M Buy
3,560,334
+50,600
+1% +$3.16M 0.87% 16
2016
Q2
$202M Sell
3,509,734
-193,110
-5% -$11.1M 0.82% 18
2016
Q1
$196M Sell
3,702,844
-291,850
-7% -$15.4M 0.77% 18
2015
Q4
$211M Buy
3,994,694
+316,790
+9% +$16.7M 0.81% 17
2015
Q3
$182M Sell
3,677,904
-103,680
-3% -$5.12M 0.7% 21
2015
Q2
$215M Buy
3,781,584
+561,840
+17% +$32M 0.75% 16
2015
Q1
$185M Sell
3,219,744
-160,750
-5% -$9.24M 0.64% 21
2014
Q4
$192M Sell
3,380,494
-160,410
-5% -$9.11M 0.66% 19
2014
Q3
$210M Sell
3,540,904
-250,930
-7% -$14.9M 0.76% 15
2014
Q2
$219M Buy
3,791,834
+103,720
+3% +$6M 0.79% 14
2014
Q1
$209M Buy
3,688,114
+102,190
+3% +$5.8M 0.8% 14
2013
Q4
$179M Sell
3,585,924
-64,500
-2% -$3.23M 0.69% 18
2013
Q3
$174M Sell
3,650,424
-118,947
-3% -$5.66M 0.72% 17
2013
Q2
$175M Buy
+3,769,371
New +$175M 0.73% 17