Swiss National Bank
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Swiss National Bank’s Biogen BIIB Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2025
Q2
$55.6M Buy
443,100
+32,100
+8% +$4.03M 0.03% 409
2025
Q1
$56.2M Sell
411,000
-500
-0.1% -$68.4K 0.04% 372
2024
Q4
$62.9M Sell
411,500
-20,600
-5% -$3.15M 0.04% 354
2024
Q3
$83.8M Buy
432,100
+1,700
+0.4% +$330K 0.05% 302
2024
Q2
$99.8M Sell
430,400
-3,500
-0.8% -$811K 0.07% 257
2024
Q1
$93.6M Sell
433,900
-19,000
-4% -$4.1M 0.07% 275
2023
Q4
$117M Sell
452,900
-12,700
-3% -$3.29M 0.09% 219
2023
Q3
$120M Sell
465,600
-56,300
-11% -$14.5M 0.09% 198
2023
Q2
$149M Sell
521,900
-49,600
-9% -$14.1M 0.1% 183
2023
Q1
$159M Sell
571,500
-18,300
-3% -$5.09M 0.11% 178
2022
Q4
$163M Sell
589,800
-44,972
-7% -$12.5M 0.12% 169
2022
Q3
$169M Sell
634,772
-2,600
-0.4% -$694K 0.12% 154
2022
Q2
$130M Buy
637,372
+1,100
+0.2% +$224K 0.09% 218
2022
Q1
$134M Buy
636,272
+69,700
+12% +$14.7M 0.08% 250
2021
Q4
$136M Sell
566,572
-28,700
-5% -$6.89M 0.08% 230
2021
Q3
$168M Sell
595,272
-25,800
-4% -$7.3M 0.11% 174
2021
Q2
$215M Buy
621,072
+29,314
+5% +$10.2M 0.13% 138
2021
Q1
$166M Sell
591,758
-6,200
-1% -$1.73M 0.11% 171
2020
Q4
$146M Sell
597,958
-37,300
-6% -$9.13M 0.1% 181
2020
Q3
$180M Sell
635,258
-53,200
-8% -$15.1M 0.14% 137
2020
Q2
$184M Sell
688,458
-11,900
-2% -$3.18M 0.16% 126
2020
Q1
$222M Buy
700,358
+118,800
+20% +$37.6M 0.24% 91
2019
Q4
$173M Sell
581,558
-58,800
-9% -$17.4M 0.18% 113
2019
Q3
$149M Sell
640,358
-841
-0.1% -$196K 0.16% 139
2019
Q2
$150M Sell
641,199
-31,400
-5% -$7.34M 0.16% 127
2019
Q1
$159M Buy
672,599
+17,800
+3% +$4.21M 0.17% 115
2018
Q4
$197M Sell
654,799
-18,900
-3% -$5.69M 0.25% 82
2018
Q3
$238M Sell
673,699
-26,000
-4% -$9.19M 0.27% 74
2018
Q2
$203M Buy
699,699
+21,200
+3% +$6.15M 0.23% 87
2018
Q1
$186M Sell
678,499
-102,400
-13% -$28M 0.23% 98
2017
Q4
$249M Sell
780,899
-7,900
-1% -$2.52M 0.27% 73
2017
Q3
$247M Sell
788,799
-100
-0% -$31.3K 0.28% 75
2017
Q2
$214M Buy
788,899
+18,000
+2% +$4.88M 0.25% 87
2017
Q1
$211M Buy
770,899
+160,600
+26% +$43.9M 0.26% 83
2016
Q4
$173M Buy
610,299
+3,500
+0.6% +$993K 0.27% 81
2016
Q3
$190M Sell
606,799
-6,100
-1% -$1.91M 0.3% 70
2016
Q2
$148M Buy
612,899
+33,800
+6% +$8.17M 0.24% 97
2016
Q1
$144M Buy
579,099
+151,900
+36% +$37.9M 0.27% 83
2015
Q4
$131M Buy
427,199
+7,400
+2% +$2.27M 0.32% 69
2015
Q3
$123M Buy
419,799
+41,200
+11% +$12M 0.31% 70
2015
Q2
$153M Buy
378,599
+18,800
+5% +$7.59M 0.4% 49
2015
Q1
$152M Buy
359,799
+140,500
+64% +$59.3M 0.41% 49
2014
Q4
$74.4M Sell
219,299
-7,900
-3% -$2.68M 0.28% 77
2014
Q3
$75.2M Sell
227,199
-3,200
-1% -$1.06M 0.29% 72
2014
Q2
$72.6M Buy
230,399
+1,400
+0.6% +$441K 0.27% 83
2014
Q1
$70M Sell
228,999
-24,200
-10% -$7.4M 0.27% 79
2013
Q4
$70.8M Sell
253,199
-3,900
-2% -$1.09M 0.28% 81
2013
Q3
$61.9M Buy
257,099
+5,600
+2% +$1.35M 0.26% 89
2013
Q2
$54.1M Buy
+251,499
New +$54.1M 0.24% 98